Staying slim with Sunlight

Stay slim with sun exposure? Sun exposure. Use to be slim!New, never considered research adds a reason to stay active in the sun:[1] The blue-light spectrum of sunlight, a spectrum that can penetrate the skin, can cause subdermal fat tissue to decrease in size. In other words, it can cause fat loss. Thus, the action of sunlight may help one to stay slim or become slim. The researchers showed that daily exposure of differentiated adipocytes [fat cells] to blue light resulted in decreased lipid droplet size and increased basal lipolytic [fat breakdown] rate.

The researchers had been doing research on light and diabetes, and they serendipitously found that the light could be an asset in maintaining (or producing) a slim body. But there are many other studies that show sun exposure is capable of assisting the body in being slim. For example: here is another benefit of sun exposure—morning sun specifically: A recent study from Northwestern Medicine demonstrates that timing and intensity of light correlate with body mass index (BMI).[2] BMI is a numerical computation comparing height and weight, and is a commonly used method to assess obesity or the lack thereof. A high BMI usually means a person is obese or at least approaching obesity, while optimal BMI is 18-25. Below 18 is considered underweight, above 25 is overweight, 30 is obese and 40 and above is morbidly obese. However, BMI does not work for heavily-muscled people, who may have minimal fat, but whose BMI puts them in an obese category—in reality, they are very slim.

This study showed that exposure to bright morning light was directly related to BMI. After adjusting for confounders such as diet, exercise and timing of sleep, it was determined that very early exposure to morning light correlated remarkably to lower BMI—they were slim, or at least slimmer. Even when light intensity was equal at different times of the day, those who received the earliest bright light had lower BMI. Most noteworthy was the fact that for each hour later in the day when light exposure occurred, BMI increased by 1.3 units. This fact is especially relevant, since a person who has a BMI of 25 (upper ideal range) could approach 30 (obesity), over time, due to the habit of receiving sun exposure later in the day, e.g. 10:00 AM rather than 6:00 AM.

The authors suggested that the mechanisms by which early light exposure could influence the “slim” mechanisms, could be the following: (1) resetting the circadian rhythm (internal clock), (2) the greater quantity of blue light in morning sun and (3) effects on melatonin production. Whatever the mechanisms, we now know that early-morning sun is important to being slim. In addition, it may also be important to other health issues. Rather than think of sun exposure as the cure-all for obesity, we must realize that poor nutritional habits and lack of exercise are much more important. Nevertheless, sun exposure can furnish one more arrow in the quiver.

Sun exposure is far superior to vitamin D supplements in preventing weight gain.

Another scientific paper “sheds more light” on the subject of being slim.[3] This research was conducted on mice with shaved backs that were placed on a high-fat diet and then exposed to non-burning ultraviolet radiation (UVR) during a three-month experiment. The mice, without the benefit of UVR, would have been expected to gain weight rapidly, but when they were exposed to UVR, the weight gain was impressively reduced. Furthermore, the UVR treatment achieved 30-40% less weight gain, compared to the expected weight gain with the high-fat diet. So, not only can sun exposure produce slim humans, it can help to produce slim rats.

Other benefits for the rats included: significant reductions in glucose intolerance, insulin resistance and fasting insulin levels (all markers and predictors of diabetes), nonalcoholic fatty liver disease measures and cholesterol. All of these factors, including obesity, are part of a cluster of maladies known as the metabolic syndrome, or MetS, which is indicative of deteriorating health and susceptibility to heart disease and diabetes. Finally, almost all people who have the aforementioned indications of MetS have a large problem maintaining slim bodies. Not a surprise, eh?

Other interesting findings:

Supplementation with vitamin D actually reduced the aforementioned beneficial effects. Dr. Shelley Gorman, one of the authors, made the following three interesting observations:[4]

  1. “These findings were independent of circulating vitamin D and could not be mimicked by vitamin D supplementation.”
  2.  “It looked like the presence of vitamin D in mice on the high fat diet prevented the [beneficial] effect of UV radiation on weight gain.”
  3. She also mentioned the mechanism of weight loss may be dependent on nitric oxide (NO), which originates from diet and can be mobilized by UV radiation to become bioactive. This was due to the fact that in another part of the experiment, skin induction of nitric oxide (NO)—also a product of skin exposure to sun—reproduced many of the positive effects of UVR, something vitamin D supplements could not do.

The Authors conclusions:

The authors concluded their research thusly: These studies suggest UVR (sun exposure) may be an effective means of suppressing the development of obesity and MetS, through mechanisms independent of vitamin D but dependent on other UVR-induced mediators such as NO.”

It has been suggested that since low 25(OH)D levels correlate to obesity, those low levels are a possible cause of obesity. However, vitamin D is stored in fat tissue. Therefore, an increase in fat will lower the quantity of 25(OH)D circulating in the blood. Hence, low vitamin D is a consequence of obesity, and not the cause.[5]

Research continues to mount about the positive effects of sun exposure, independent of vitamin D production. This should in no way be construed to diminish the vital importance of vitamin D. Rather, it is to make a point that sun exposure works in many ways, including stimulating the production of vitamin D, NO, serotonin and endorphins. Why should we be satisfied with any one of these marvelous health aids when the sun is available? Because, with sun exposure, we can enjoy the benefits of the entire package.

So, being slim is dependent on a series of choices: avoiding junk food, eating large quantities of vegetables and fruits, taking a daily walk or engaging in other aerobic exercise, weight training and, finally, soaking up some daily, non-burning sunlight.

In conclusion: Stay slim, my friends.

[1] Katarina Ondrusova, Mohammad Fatehi , Amy Barr, Zofa Czarnecka, Wentong Long, Kunimasa Suzuki, Scott Campbell, Koenraad Philippaert, Matthew Hubert, Edward Tredget, Peter Kwan, Nicolas Touret, Martin Wabitsch, Kevin Y. Lee & Peter E. Light. Subcutaneous white adipocytes express a light sensitive signaling pathway mediated via a melanopsin/TRPC channel axis. Scientific Reports November 27;7:16332

[2] Reid KJ, Santostasi G, Baron KG, Wilson J, Kang J, Zee PC. Timing and intensity of light correlate with body weight in adults. PLoS One 2014;2;9(4)

[3] Geldenhuys S, Hart PH, Endersby R, Jacoby P, Feelisch M, Weller RB, Matthews V, Gorman S. Ultraviolet radiation suppresses obesity and symptoms of metabolic syndrome independently of vitamin D in mice fed a high-fat diet. Diabetes. 2014 Nov;63(11):3759-69

[4] Dr. Shelly Gorman, quoted on Science Network Australia article: Sun shines light on obesity challenge. http://www.sciencewa.net.au/topics/health-a-medicine/item/3618-sun-shines-light-on-obesity-challenge (accessed February 4, 2016)

[5] Cândido FG, Bressan J. Vitamin D: link between osteoporosis, obesity, and diabetes? Int J Mol Sci. 2014 Apr 17;15(4):6569-9.

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Reduce risk of liver cancer with Sunlight. Sun exposure is inversely associated with risk..

Sunlight fighting liver cancerAlthough liver cancer is generally thought to be related to drinking, other factor such as obesity, HIV infection, smoking, diabetes, socioeconomic factors, drugs and others come into play. A recent study compared sun exposure to liver cancer and adjusted for the aforementioned factors. Sun exposure was shown to be a major factor in reducing the risk of the most prevalent and deadly liver cancer, called hepatocellular carcinoma.[1]

Major finding for liver cancer:

The subjects were divided into five groups, or quintiles, based on their sun exposure. In addition such factors as as outdoor activity, geographical residence, urban or rural settings, etc. were adjusted for.

Most noteworthy, was the fact that for each quintile of increasing sun exposure, there was a 17% decrease in the liver cancer risk.

A disappointment:

The only disappointing part to the study was this: The researchers assumed that the positive influence of sun exposure on liver cancer was due to vitamin D production. And, they may have been correct. Yet the sun causes the body to produce many other photoproducts. Due to the sun’s myriad effects, serotonin, endorphin, BDNF, nitric oxide, and dopamine are all increased. Therefore, it is impossible to know if vitamin D alone was the reason for the reduced risk of liver cancer. However, vitamin D undoubtedly played a large part in the positive results.  And, there is a problem with giving vitamin D the credit without knowing for sure. People may believe, due to this research, that they need only to take a vitamin D supplement to receive all benefits of sunlight. Therefore, they can make very bad assumptions.

This is the first study on sun exposure and liver cancer.

Probably, this is the first research to show a link between liver cancer and inadequate sun exposure. However, there are indications that sun exposure is associated with a reduced risk of another liver ailment, called fatty liver disease.[2]

In conclusion, if you are a liver lover, you can love your liver by protecting it from liver cancer. Hence, you should obtain your share of unscreened, direct, non-burning sun exposure. Happy sunning!

[1] Trang VoPham, Kimberly A. Bertrand, Jian-Min Yuan, Rulla M. Tamimi, Jaime E. Hart,

and Francine Laden. Ambient ultraviolet radiation exposure and hepatocellular carcinoma incidence in the United States. Environmental Health (2017) 16:89.

[2] Gorman S, Black LJ, Feelisch M, Hart PH, Weller R. Can skin exposure to sun prevent liver inflammation? Nutrients 2015 May 5;7(5):3219-39.

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Inflammatory Bowel Diseases (IBD) (Crohn’s and Ulcerative Colitis) are painful! Tame them with Sun Exposure.

First of all, let’s define IBD:Stop these diseases with sun exposure.

Inflammatory bowel diseases (IBD) are known as Crohn’s disease (CD) and Ulcerative Colitis (UC). UC is a chronic inflammatory condition characterized by relapsing and remitting episodes of inflammation limited to the mucosal layer of the colon.[1] Crohn’s however, can involve any part of the gastrointestinal tract from the mouth to the anus, but most commonly affects the small intestine or the colon, or both.[2]

New Italian Research

Research from Italy, published in December, 2017, shows that inadequate sun exposure is associated closely with IBD.[3] The researchers demonstrated that “Patients with IBD are significantly less exposed to sunlight then controls in our Mediterranean Country, often to an extent that may impair Vitamin D activation.” Consequently, they suggest that increased sun exposure may prove beneficial to patients.

Other research:

Furthermore, in a 12-year investigation of hundreds of thousands of IBD patients, the following was found: Hospitalizations and prolonged hospitalizations for both UC and CD were higher among those who had low sun exposure, compared to those with very high sun exposure.[4] In addition, the same relationship was shown between sun exposure, bowel surgeries and deaths: more surgeries were needed for those IBD patients who experienced the lowest sun exposure compared to those who had the highest sun exposure, and more deaths occurred among those with low exposure.

Does sun exposure help other diseases?

Furthermore, an interesting side note to the aforementioned investigation was the large number of non-IBD patients analyzed for sun exposure levels. Most noteworthy was the finding that the same relationship existed as with the IBD patients—low sun exposure was associated with prolonged hospitalizations and more deaths when compared with high exposure. Therefore, sun exposure saves lives, whether by decreasing IBD or preventing the myriad additional diseases that we have previously discussed.

In conclusion, if you have a painful feeling deep in your gut, take action: First of all, get a diagnosis. But do it while simultaneously increasing your safe, non-burning sun exposure. It may be just what the doctor ordered!

[1] Peppercorn M, Cheifetz, A, Rutgeerts P, Grover S. Definition, epidemiology, and risk factors in inflammatory bowel disease. http://www.uptodate.com/contents/definition-epidemiology-and-risk-factors-in-inflammatory-bowel-disease.

[2] Web MD http://www.webmd.com/ibd-crohns-disease/crohns-disease/inflammatory-bowel-syndrome.

[3] Vernia P, Burrelli Scotti G, Dei Giudici A, Chiappini A, Cannizzaro S, Afferri MT, de Carolis A. Inadequate Sunlight Exposure in Patients with Inflammatory Bowel Disease. J Dig Dis. 2017 Dec 18. doi: 10.1111/1751-2980.12567. [Epub ahead of print]

[4] Limketkai BN, Bayless TM, Brant SR, Hutfless SM. Lower regional and temporal ultraviolet exposure is associated with increased rates and severity of inflammatory bowel disease hospitalization. Aliment Pharmacol Ther. 2014 Sep;40(5):508-17.

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Maintain your marbles—Vitamin D and Sunshine protect against Dementia and Cognitive Loss.

Better cognitive ability with vitamin DDoes cognitive loss lead to dementia? Yes. Is vitamin D important to the risk of cognitive loss? Yes. Do those levels also influence the ability to think (cognitive ability)? In 2002, 252 people were assessed for vitamin D levels, signs of dementia and cognitive ability.[1] And, in 2012 another assessment was completed. The data was then assessed to determine if the initial vitamin D levels were associated with different risks of dementia and cognitive ability after 10 years.

Cognitive ability results:

First of all, those with higher vitamin D levels at the beginning of the ten-year period had about 40% better executive functioning at the end of the period compared with those who had lower vitamin D levels (executive functions are a set of processes that all have to do with managing oneself and one’s resources in order to achieve a goal, and they can be viewed as the “conductor” of all cognitive skills.)[2]

Of course, vitamin D levels are determined by the quantity of sun exposure one receives. Therefore, we could say that vitamin D levels are a surrogate measurement of sun exposure.

Other research on sunlight and cognitive ability:Much research has been done on the association of sun exposure on cognitive abilities, so this research is no surprise. Especially relevant are the results of more recent research, based on a 15-year residential history of varying degrees of sun exposure. It has also shown cognitive impairment in persons who were below the median exposure to sun was 88% greater than those who were above the median.[3] Researchers mentioned vitamin D as a possible mechanism by which sun positively influenced cognitive abilities. And, they also remarked that regulation of the circadian rhythm by sun could be a factor. Additionally, these same investigators had previously shown the following: lower levels of sun exposure resulted in a 2.6-times higher incidence of cognitive impairment.[4] 

 Does BDNF play a part in protecting cognitive ability? 

Part of the reason for better cognitive skills under the influence of sun exposure may not have anything to do with vitamin D. It could be due to a chemical called Brain-derived neurotropic factor (BDNF). It is a part of a cascade of proteins promoting growth of neurons and preventing nerve death.[5] It is especially relevant that BDNF levels have been shown to increase significantly after bright light exposure.[6] And, in what I would consider to be a remarkably important study, both light exposure and treadmill exercise increased the expression of BDNF in rats.[7] And—as the researchers showed—exercise and/or bright light promoted neurogenesis (new nerve cell growth) in the adult rat brain. How important is this finding for adults who are worried about cognitive decline? Furthermore, we are actually seeing an example of new brain cells being built by bright light and exercise! Researchers have shown that BDNF has an effect on behavior, mood (e.g. depression), and brain adaptation (e.g. plasticity) and that its levels fluctuate seasonally in correlation with the amount of ambient sun:[8]


In addition, we can add one more natural chemical inversely associated with cognitive decline, depression, memory loss, and nervous system degeneration, and directly associated with sun exposure. We now have vitamin D, serotonin, endorphins, dopamine and BDNF. Hence, sun exposure is absolutely necessary to human health. Be sure you are obtaining your share! Don’t let your mind deteriorate due to avoiding the sunlight.


Embrace the sun, but do it safely. Finally: avoid sunburn.




[1] Alicia M. Goodwill, Stephen Campbell, Steven Simpson Jr, Maria Bisignano,

Cherie Chiang, Lorraine Dennerstein, Cassandra Szoekea. Vitamin D status is associated with executive function a decade later: Data from the Women’s Healthy Ageing Project. Maturitas 107 (2018) 56–62

[2] http://www.ldonline.org/article/29122

[3] Kent ST, Kabagambe EK, Wadley VG, Howard VJ, Crosson WL, Al-Hamdan MZ, Judd SE, Peace F, McClure LA. The relationship between long-term sun radiation and cognitive decline in the REGARDS cohort study. Int J Biometeorol. 2014 Apr;58(3):361-70.

[4] Kent ST, McClure LA, Crosson WL, Arnett DK, Wadley VG, Sathiakumar N. Effect of sun exposure on cognitive function among depressed and non-depressed participants: a REGARDS cross-sectional study. Environ Health. 2009 Jul 28;8:34

[5] http://scicurious.scientopia.org/2010/12/13/bdnf-and-depression/

[6] Tirassa P1, Iannitelli A, Sornelli F, Cirulli F, Mazza M, Calza A, Alleva E, Branchi I, Aloe L, Bersani G, Pacitti F. Daily serum and salivary BDNF levels correlate with morning-evening personality type in women and are affected by light therapy. Riv Psichiatr. 2012 Nov-Dec;47(6):527-34.

[7] Kwon SJ, Park J, Park SY, Song KS, Jung ST, Jung SB, Park IR, Choi WS, Kwon SO. Low-intensity treadmill exercise and/or bright light promote neurogenesis in adult rat brain. Neural Regen Res. 2013 Apr 5;8(10):922-9.

[8] Molendijk ML, Haffmans JP, Bus BA, Spinhoven P, Penninx BW, Prickaerts J, Oude Voshaar RC, Elzinga BM. Serum BDNF concentrations show strong seasonal variation and correlations with the amount of ambient sun. PLoS One. 2012;7(11):e48046.

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Is the sunbed a Gianus Bifrons (two-headed god)?

Is the sunbed a Gianus Bifrons (two-headed god)?

Sunbeds, Good or bad?

Sunbeds may save lives.

Recent research comes to the conclusion that indoor tanning is a Gianus Bifrons,[1] which is interpreted as a two-headed god. One head, according to these researchers, is an increase in various skin cancers (a dubious claim). The other head is the ability of sunbeds to produce large quantities of vitamin D, increasing serum vitamin D concentrations up to two fold. In addition, this increase in vitamin D, they believe, could lead to a decrease in myriad diseases.

The authors of the paper state the following: “Therefore, some favorable effects [of tanning beds] against the risk of developing many human diseases, including non-skin cancers, cannot be excluded at first glance, although they may not be only linked to [higher] vitamin D status.” They also go on to suggest that more research should be performed to determine if the unfavorable effects of indoor tanning on skin cancers may be outweighed by the favorable benefits of amelioration of low vitamin D levels.

This research ignored many research studies showing that regular, non-burning sun exposure is protective against melanoma. In my upcoming book, Embrace the sun, about 14 different research studies are cited. All of these studies demonstrate a positive effect of sun exposure. There are also positive effects of sun exposure and sunbed exposure, beyond the ability to produce vitamin D. Nitric oxide (NO) is produced by both. NO is a vasodilator that lowers blood pressure and reduces the risk of heart disease.

No increase in melanoma!

Perhaps the most important study to differentiate between the positive effects and negative effects of sunbed exposure is this one: A 20-year Swedish study demonstrated that women who used sunbeds were 23% less likely to die from any cause than women who did not use them.[2] This study also showed no increase in melanoma after the 20-year period.

So, what more do we need to know about the pros and cons of sunbed use?

Here are a few more positive effects of sunbeds on human health:

  • Sunbed use reduces the risk of type 2 diabetes.[3]
  • Sunbed use strengthens bone.[4]
  • Sunbed use controls psoriasis and eczema.[5]
  • Sunbed use reduces chronic pain.[6], [7]
  • Sunbed use may help unborn children.[8]
  • Sunbed use reduces the risk of clots.[9]
  • Sunbed use is associated with lower breast-cancer risk.[10]
  • Sunbed use reduces the risk of death.[11]

[1] Giuseppe Lippi*, 1, Gianfranco Cervellin†, Elisa Danese. Indoor Tanning a Gianus Bifrons:

Vitamin D and Human Cancer. Advances in Clinical Chemistry 2017;20:1-16

[2] Lindqvist PG, Epstein E, Landin-Olsson M, Ingvar C, Nielsen K, Stenbeck M, Olsson H. Avoidance of sun exposure is a risk factor for all-cause mortality: results from the Melanoma in Southern Sweden cohort. J Intern Med. 2014 Jul;276(1):77-86.

[3] P.G. Lindqvist, H. Olsson, M. Landin-Olsson, Are active sun exposure habits related

to lowering risk of type 2 diabetes mellitus in women, a prospective cohort

study?, Diabetes Res. Clin. Pract. 90 (2010):109-114.

[4] Tangpricha V, Turner A, Spina C, Decastro S, Chen TC, Holick MF. Tanning is associated with optimal vitamin D status (serum 25-hydroxyvitamin D concentration) and higher bone mineral density. Am J Clin Nutr 2004;80:1645-49.

[5] Radack KP, Farhangian ME, Anderson KL, Feldman SR. A review of the use of tanning beds as a dermatological treatment. Dermatol Ther (Heidelb). 2015 Mar;5(1):37-51.

[6] Kaur M, Feldman SR, Liguori A, Fleischer AB Jr. Indoor tanning relieves pain. Photodermatol Photoimmunol Photomed. 2005 Oct;21(5):278.

[7] Taylor SL, Kaur M, LoSicco K, Willard J, Camacho F, O’Rourke KS, Feldman SR. Pilot study of the effect of ultraviolet light on pain and mood in fibromyalgia syndrome. J Altern Complement Med. 2009 Jan;15(1):15-23.

[8]  Bukhari, M. Quoted in London Times April 27, 2008.

[9] Lindqvist PG, Epstein E, Olsson H. Does an active sun exposure habit lower the risk of venous thrombotic events? A D-lightful hypothesis. J Thromb Haemost. 2009 Apr;7(4):605-10.

[10] Yang L, Veierød MB, Löf M, Sandin S, Adami HO, Weiderpass E. Prospective study of UV exposure and cancer incidence among Swedish women. J Intern Med. 2014 Jul;276(1):77-86

[11] Lindqvist PG, Epstein E, Landin-Olsson M, Ingvar C, Nielsen K, Stenbeck M, Olsson H. Avoidance of sun exposure is a risk factor for all-cause mortality: results from the Melanoma in Southern Sweden cohort. J Intern Med. 2014 Jul;276(1):77-86.

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Skin Cancer: Are your blood pressure drugs and poor nutrition risk factors?

A common skin cancerSkin cancer is rampant. In an earlier blog, evidence was presented that a common drug for erectile dysfunction, sildenafil (Viagra), had a nasty side effect: Its use was associated with an increased risk of melanoma.[1]

Now, another study from Denmark demonstrates that a popular drug for high blood pressure is dangerous. It substantially raises the risk of non-melanoma skin cancer (NMSC).[2] The NMSC specifically studied was squamous cell carcinoma (SCC), which is easily treated and has a low mortality rate. Nevertheless, it is something we should try to avoid.  Hydrochlorothiazide is the drug. It is popular in both the U.S. and Western Europe. Approximately 10% of all cases of squamous cell carcinoma may be caused by Hydrochlorothiazide. Especially relevant is this fact: In Denmark, the risk of developing squamous cell carcinoma is up to seven times greater for users of Hydrochlorothiazide.[3] However, It should be noted that other types of blood-pressure medication did not show the same effects in promoting skin cancer.

Why do we post this information on skin cancer?

The reason for posting this information? To try to halt the idea that sun exposure is the cause of all skin cancers. In fact, there is a plethora of evidence against that idea. Furthermore, regular, non-burning sun exposure is protective against melanoma in most people. In previous blogs for Sunlight Institute, we have offered evidence that lack of foods such as nuts, seeds, tomatoes, greens and fruits increase skin cancer risk. Meat consumption has also been shown to increase the risk of melanoma. So has alcohol consumption. PCB exposure also increases the risk. Being obese is another risk factor. Hence, Hydrochlorothiazide has many partners in promoting skin cancer.

In conclusion: When you see that someone has a skin cancer, think! Is it due to drugs? Is it due to poor nutrition? While sunlight may have an influence on squamous cell carcinoma, we should definitely not immediately determine that it is caused by our friend, the Sun. sun exposure without sunscreen

[1] Li WQ, Qureshi AA, Robinson K, Han J. Sildenafil use and increased risk of incident melanoma in US men: a prospective cohort study. JAMA Intern Med. 2014 Jun;174(6):964-70C.

[2] Arnspang S, Gaist D, Johannesdottir Schmidt SA, Hölmich LR, Friis S,

Pottegård A, Hydrochlorothiazide use and risk of non-melanoma skin cancer: A nationwide case-control

study from Denmark, Journal of American Dermatology (2017), doi: 10.1016/j.jaad.2017.11.04

[3] Popular blood pressure medicine linked with increased risk of skin cancer. Medical Express News, Nov. 5, 2017. https://medicalxpress.com/news/2017-12-popular-blood-pressure-medicine-linked.html;

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Sunbeds (Tanning beds) are Vitamin D Machines that have many health benefits.

Sunbeds for vitamin DDo sunbeds have healthful effects?The Vitamin D Society of Canada recently issued a significant news release: It describes new research reported on the vitamin D-producing effects of tanning salon sunbeds. The study was published in the journal DermatoEndocrinology,[1] and it found that standard tanning salon sunbeds are very effective in raising serum levels of vitamin D. Those who used the beds were able to attain optimal levels (more than 100 nmol/L) [40ngml] D during winter. Actually, another earlier study had also showed similar results,[2] so this research served to corroborate that finding.

The significance of this evidence about sunbeds cannot be overemphasized. 

This is transcendentally important information for Canadians! They receive little or no vitamin D-producing sun exposure in winter. It is similarly important for all others who live at high latitudes, work indoors or are rarely exposed to sunlight. Vitamin D deficiency, primarily due to lack of sun exposure, is a disaster that becomes larger each year. The reason? The Powers of Darkness continue to promote sun avoidance and sunscreen use. It has been shown that an SPF 15 sunscreen will decrease sun-stimulated vitamin D production by up to 99.5%.[3]


The paper was written by Doctors Samantha Kimball, Jasmine Lee and Reinhold Vieth. Here is the research link: http://www.tandfonline.com/doi/full/10.1080/19381980.2017.1375635


This new research builds on the importance of vitamin D health benefits: It found that if Canadians raised their vitamin D blood levels to an optimal 100 nmol/L, it could prevent 23,000 premature deaths. It could also save $12.5 Billion annually in direct health care costs. The researchers indicate that low vitamin D levels in winter leave one more susceptible to many diseases. Some of these include colds and flu. And, they also lead to more serious illnesses such as osteoporosis, diabetes, multiple sclerosis, many cancers and heart disease. Remember this, however: The sunbeds that emit Ultraviolet B (UVB) light are the only ones that should be used. UVB is necessary for the production of vitamin D. The high pressure beds produce little or no UVB. Therefore, I do not recommend them.

Due to the scare tactics of those who frighten the public out of the sunlight, many other facts about the beneficial effects of sunbeds have been forgotten or hidden. Below are a few more of those facts.


Healthful Effects of Sunbeds:


  1. Sunbeds strengthen bone. As mentioned above, one study compared 50 subjects who used a sunbed at least once weekly, to 106 control subjects who did not use them. Sunbed users had 90% higher vitamin D levels than non-users. They also had significantly higher bone-mineral density, indicative of stronger bones.[4]


  1. Sunbeds can control psoriasis and eczema. Research showed convincingly that sunbeds are a valid treatment for psoriasis.[5] And, it also stated another conclusion: Sunbeds could be useful “as a treatment option for atopic dermatitis [eczema], mycosis fungoides, acne, scleroderma, vitiligo, and pruritus, as well as other UV sensitive dermatoses.”


  1. Sunbeds use reduce chronic pain.[6], [7] A study of pain in fibromyalgia patients, conducted by dermatologists, revealed that those who used UV-producing sunbeds experienced a decrease of 0.44 points on a 10 point scale (Likert scale), when compared to those who did not receive UV light. Furthermore, feelings of well-being and relaxation were also reported among the tanners.


  1. Sunbeds may help unborn children. Sunbeds are now being recommended for use by pregnant women who will give birth in a winter month, in order to protect the unborn child from osteoporosis during adulthood.[8]


  1. Sunbed use reduces the risk of clots. In an eleven-year study of the sun-exposure habits of 40,000 women, venous thrombotic (clotting) events were measured. It was found that women who sunbathed during the summer, on winter vacations, or when abroad, or used sunbeds, were at 30% reduced risk of clots compared to those who did not sunbathe.[9]


  1. Sunbed use is associated with lower breast-cancer risk.[10]


  1. Sunbed use reduces the risk of death. Finally, Perhaps the most important research on sunbeds was a 20-year study: it showed that women who used sunbeds were 23% less likely to die from any cause than women who did not use them. [11]


Due to the health benefits, and also due to the way they help my mood, I enjoy using sunbeds. Nevertheless, I am not telling you to use them or to avoid them. However, the aforementioned positive information should at least help you to make an informed decision. Stay healthy and remember that the sun is your friend!



[1] Samantha Kimball, Jasmine Lee and Reinhold Vieth. Sunbeds with UVB radiation can produce physiological levels of serum 25-Hydroxyvitamin D in healthy volunteers. Article: e1375635. Published online: 06 Oct 2017.

[2] Tangpricha V, Turner A, Spina C, Decastro S, Chen TC, Holick MF. Tanning is associated with optimal vitamin D status (serum 25-hydroxyvitamin D concentration) and higher bone mineral density. Am J Clin Nutr 2004;80:1645-49.

[3] Matsuoka LY, Ide L, Wortsman J, MacLaughlin JA, Holick MF. Sunscreens suppress cutaneous vitamin D3 synthesis. .Journal of Clinical Endocrinology & Metabolism 1987; 64:1165-68.

[4] Tangpricha V, Turner A, Spina C, Decastro S, Chen TC, Holick MF. Tanning is associated with optimal vitamin D status (serum 25-hydroxyvitamin D concentration) and higher bone mineral density. Am J Clin Nutr 2004;80:1645-49.

[5] Radack KP, Farhangian ME, Anderson KL, Feldman SR. A review of the use of tanning beds as a dermatological treatment. Dermatol Ther (Heidelb). 2015 Mar;5(1):37-51.

[6] Kaur M, Feldman SR, Liguori A, Fleischer AB Jr. Indoor tanning relieves pain. Photodermatol Photoimmunol Photomed. 2005 Oct;21(5):278.

[7] Taylor SL, Kaur M, LoSicco K, Willard J, Camacho F, O’Rourke KS, Feldman SR. Pilot study of the effect of ultraviolet light on pain and mood in fibromyalgia syndrome. J Altern Complement Med. 2009 Jan;15(1):15-23.

[8] Bukhari, M. Quoted in London Times April 27, 2008.

[9] Lindqvist PG, Epstein E, Olsson H. Does an active sun exposure habit lower the risk of venous thrombotic events? A D-lightful hypothesis. J Thromb Haemost. 2009 Apr;7(4):605-10.

[10] Yang L, Veierød MB, Löf M, Sandin S, Adami HO, Weiderpass E. Prospective study of UV exposure and cancer incidence among Swedish women. J Intern Med. 2014 Jul;276(1):77-86

[11] Lindqvist PG, Epstein E, Landin-Olsson M, Ingvar C, Nielsen K, Stenbeck M, Olsson H. Avoidance of sun exposure is a risk factor for all-cause mortality: results from the Melanoma in Southern Sweden cohort. J Intern Med. 2014 Jul;276(1):77-86.

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Sunscreen use in winter? Sunscreen while we sleep? Has the world gone mad?

Be careful of sunscreen use. Sunscreen may be lethal. Yet, there have been suggestions that everyone wear it all day long, including during winter. Furthermore, some are now suggesting that we also wear a special new sunscreen at night. Why? Because, supposedly, this would protect us from the damage that may have already occurred during daytime sun exposure.[1] It seems that the most appropriate description of this message is “insanity.” If the sunscreen used in the day did not prevent damage, why would we need it at night?

Here is your answer regarding sunscreen:

The assault against the sun is a ploy to sell a product. The sellers are doing well. For example, sunscreen sales are a multibillion-dollar business. Especially relevant is the fact that sales in 1972 were about $18 million per year.[2] But, the total USA market for sunscreens in 2005 had climbed to $640 million a year.[3] In 1972 dollars it is equivalent to $320 million, an almost 18-fold increase. However, those figures pale by comparison with figures from 2013: The global sun care market generated 5.6 billion US dollars from its sun-protection products segment. This segment includes sunscreens—many of which are ingredients in cosmetics.[4]

Most noteworthy is this important fact: the first sunscreens appeared about seven decades ago, and melanoma risk has increased by about 3,000% since that time.[5] It seems like more sunscreens = more melanoma. Consequently, we cannot recommend these noxious products. However, the manufacturers of these products can never satiate their lust for more money. Hence, they and their accomplices are now suggesting 24-hour application.

The Powers of Darkness; purveyors of sunscreen.

The Skin Cancer Foundation, which takes donations from many sunscreen manufacturers, has stated: “for adequate protection against melanoma, non-melanoma skin cancers and photo-aging, everyone over the age of six months should use sunscreen daily year-round, in any weather.” Due to this advice, sunscreen sales go ballistic, while the public suffers poor health. Yes, they are suggesting we use their products even in cloudy weather in the winter! How convenient, for an organization that receives sunscreen dollars, to make such a statement. Could it be due to a conflict of interest here?

Consider common sense when considering sunscreen!  Enjoy the sun forget sunscreen.

Each year sunscreen sales increase, and as a result, each year melanoma incidence increases? Does it seem like there is something wrong with that scenario? Those who insist on 24-hour-per-day sunscreen use, probably missed an important study. It compared 571 people with a first diagnosis of melanoma with 913 healthy control subjects. The results, were that those who used sunscreens, were 1.8 times more likely to contract melanoma than those who did not. And, among those who always used sunscreens, so they could stay out longer in the sun, the risk of melanoma was 8.7 times greater than those who did not use them.[6]

How do you protect from too much sun exposure? Not sunscreen!

You may begin to redden or feel too hot. Maybe you should remove yourself from the sunlight?  Most of all, do not use sunscreens. And, you should cover up or seek the shade. That is the way God (or Nature if you prefer) intended it. In conclusion, remember that non-burning sunlight is a friend, so enjoy your friend!

[1] Sanjay Premi, Silvia Wallisch, Camila M. Mano Adam B. Weiner, Antonella Bacchiocchi, Kazumasa Wakamatsu. Chemiexcitation of melanin derivatives induces DNA photoproducts long after UV exposure. Science 20 Feb 2015:347: 6224, 842-847.

[2] Moss, R. Another Dissident Dermatologist. Cancerdecisions.com Newsletter. 2005.

[3] Bonner, C. Contact Kline Co.http://www.klinegroup.com/

[4] http://www.statista.com/topics/1990/sun-care-industry/

[5] Melanoma International Foundation, 2007. Facts about melanoma. Sources: National Cancer Institute 2007 SEER Database, American Cancer Society’s 2007 Facts and Figures, the Skin Cancer Foundation, the American Academy of Dermatology.

[6]Westerdahl J, Ingvar C, Mâsbäck A, Olsson H. Sunscreen use and malignant melanoma. Intern J Cancer 2000;87:145-50.



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High blood-pressure (hypertension) predicts stroke. Wayne overcomes it with Sunshine.

blood pressureBlood pressure is determined by (1) the amount of blood the heart pumps and the amount of resistance to blood flow in the arteries. Consequently, the more blood the heart pumps, and the tighter the arteries, the higher the blood pressure.[1]

Chronic high blood pressure, or hypertension, can damage arterial walls and can eventually lead to an increased risk from heart disease, heart failure, other arterial diseases, kidney disease, irregular heart rhythms, osteoporosis, cognitive dysfunction, painful intercourse and stroke.[2] High blood pressure, also known as hypertension, is rampant in western societies. Untreated high blood pressure is a major killer. It is especially dangerous because it is primary risk factor for heart disease and stroke.

I have written several blogs on high blood pressure. Nevertheless, the experience of my friend Wayne may provide impetus for hypertension sufferers to try the sunshine solution.

Wayne, a resident of Texas, came to our former health resort seeking help for conditions of high blood pressure, obesity and various other maladies. I recommended, along with our healthful nutrition program, that he should sunbathe daily. Consequently, he “took it to heart” and could be found outside by the pool daily, dutifully soaking up the midday sunlight.

Wayne arrived at our program with a blood pressure of 157 systolic and 97 diastolic (157/97). Most noteworthy, those numbers put him at high risk for a stroke. Normal blood pressures are considered below 120 systolic, and below 80 diastolic. Four weeks later, as a result of his lifestyle changes.  His numbers dropped to 125/54, meaning that he progressed from high stroke risk to very low stroke risk. Especially relevant is the fact that these changes were accomplished without medication.

The average drop in blood pressure among all guests at that program was 16 systolic and 12 diastolic. This is remarkable, considering that many of them had normal levels coming in.

Here are just a few of the blood pressure changes accomplished during that time:

  • Frieda, from Oregon, lowered her blood pressure 33 points systolic and 30 points diastolic.
  • Joyce, from Rhode Island, lowered her blood pressure 31 points systolic and 24 points diastolic.
  • Jeff, from Utah, lowered his blood pressure 39 points systolic and 12 points diastolic.
  • Susan, from New York, lowered her blood pressure 20 points systolic and 26 points diastolic.

Was all of this success due to sun exposure?

It should not be construed that these results were all a result of sun exposure. Nor should we conclude that hypertension is a result of sun deprivation. Typical American citizens engage daily in “killer” nutrition, subjecting themselves to dietary patterns and chemical additives that never existed in human life until modern times. Therein lie the major causes of hypertension. Hence, part of the improvements in blood pressure were due to the dietary changes we implemented with our guests.

More research regarding sunlight and blood pressure:

Sun exposure can, to an extent, act as an antidote to the poisons we consume. And, it acts much more quickly than dietary changes. Consider this: Dr. Oplander and his colleagues demonstrated that whole-body Ultraviolet A (UVA) irradiation worked what seemed like a miracle.[3] It caused a rapid, significant decrease of 11% in both systolic (upper number) and diastolic (lower number) blood pressure 30 minutes after the exposure. That change lasted up to 60 minutes. The lowered blood pressure lasted up to 60 minutes. Not only did blood pressure decrease, but arterial blood flow increased by 68%.

Nitric oxide, a potent vasodilator (blood-vessel relaxer) that occurs with sun exposure, was the photoproduct that led to these spectacular, important changes. This is important, because UVA is available almost any time the sun shines, winter and summer. Ultraviolet B (UVB) is not available in some areas during winter, due to the sun’s angle. This is especially true in the higher latitudes of the Northern hemisphere, or in the lower latitudes of the Southern hemisphere. UVB stimulates the production of vitamin D. So, it is especially relevant here that vitamin D was not involved in the lowering of blood pressure in Dr. Oplander’s study. Nitric oxide, however, was very involved.

Let’s take a look at one more study of sun exposure and hypertension: research China demonstrates that exposure to sun correlates to a lowered risk:[4] In a randomly selected population of Chinese residents from Macau (where the rate of hypertension is very high), the following risk factors for hypertension were assessed: lack of sun exposure, low intake of fish, smoking, obesity and lack of exercise. An average of more than one-half hour of sun exposure per day, as compared to no sun exposure, predicted a 40% reduced risk for hypertension.

I could go on for another page about the horrors of blood-pressure medication, but what I have said suffices. Non-burning sun exposure is one of the best elixirs for hypertension. In conclusion, one might say that it is no wonder that Wayne overcame his blood pressure problem!

[1] Mayo Clinic Diseases and Conditions: High blood pressure (hypertension). http://www.mayoclinic.org/diseases-conditions/high-blood-pressure/basics/definition/con-20019580 (accessed January 5, 2016).

[2] Ann Pietrangelo. Healthline 2014 http://www.healthline.com/health/high-blood-pressure-hypertension/effect-on-body (accessed January 4, 2016).

[3] Opländer C, Volkmar CM, Paunel-Görgülü A, van Faassen EE, Heiss C, Kelm M, Halmer D, Mürtz M, Pallua N, Suschek CV.. Whole body UVA irradiation lowers systemic blood pressure by release of nitric oxide from intracutaneous photolabile nitric oxide derivates. Circ Res. 2009;105:1031–40.

[4] Ke L, Ho J, Feng J, Mpofu E, Dibley MJ, Feng X, Van F, Leong S, Lau W, Lueng P, Kowk C, Li Y, Mason RS, Brock KE. Modifiable risk factors including sun exposure and fish consumption are associated with risk of hypertension in a large representative population from Macau. J Steroid Biochem Mol Biol 2013 Nov 1 [Epub ahead of print].


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UVB, a sunlight spectrum, reduces inflammation and helps prevent atherosclerosis and heart disease.

Sunlight for the heartUVB is a spectrum of sunlight with many effects. These include the suppression of inflammation in the skin.  It has been used to very successfully treat skin diseases such as psoriasis and eczema.

Since inflammation is necessary to produce the condition of atherosclerosis (plugging of the arteries).  It would be interesting to know whether UVB might also have the same anti-inflammatory effects in the arteries. If so, the effect could inhibit or eliminate atherosclerosis, and thus provide an entirely new treatment for heart disease. It would also protect against  vascular events such as stroke and intermittent claudication.

The idea that UVB could prevent atherosclerosis by reducing inflammation in arteries was recently studied by Japanese researchers.[i] Using a mouse model, they demonstrated that UVB light irradiation, applied once a week for 14 weeks, leads to an increase in the action of T-regulatory cells, thereby inhibiting inflammation. In addition, exposure reduced the production of another type of T-cell which is pro-inflammatory and thereby pro-atherogenic (leading to the production of atherosclerosis). These two effects of UVB light reduce the development and progression of atherosclerosis.

Stated differently, the research shows that sun exposure is a critically-important therapy to reduce and prevent diseases of the heart and blood vessels. Protect your heart by being sure to obtain sufficient non-burning sunlight  from sun exposure or other sources such as sun lamps. It is also important to note that neither skin cancer nor skin inflammation were observed following UVB exposure in this breakthrough study, which again emphasizes the importance of sun exposure for human health.

If these findings are true, then we would expect that there would be fewer cardiovascular events such as heart attacks and strokes during times of less sun exposure.  Accordingly, Research has demonstrated that those below the median level of serum vitamin D suffer 57% more heart attacks than those whose levels were above the median[i] (low vitamin D levels are a surrogate for sun exposure). They also noted that the greatest number of heart attacks occurred in winter and early spring. These seasons, of course, are the times of lowest sun exposure. And, according to what we have learned, they are also the times of greatest inflammation.

Let there be light, and safely apply it to your skin. Be sure not to burn.

[i] Scragg R, Jackson R, Holdaway IM, Lim T, Beaglehole R. Myocardial infarction is inversely associated with plasma 25-hydroxyvitamin D3 levels: a community-based study. Int J Epidemiol 1990;19:559-63.



[i] Sasaki N, Yamashita T, Kasahara K, Fukunaga A, Yamaguchi T, et al. UVB Exposure Prevents Atherosclerosis by Regulating Immunoinflammatory Responses. Arterioscler Thromb Vasc Biol. 2016;36:00-00

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