Bone is deteriorating in our society. Why? Since the year 2000, there has been an 8,300% increase in vitamin D deficiency in children. Insufficient time playing outdoors and/or sunscreen use are the causes of this disaster. It is especially relevant to know that the skin produces vitamin D when it is touched by ultraviolet light (UV). (UV, of course, is a spectrum of sunlight, and of tanning beds and sunlamps.) And, the artificially-lighted environments that most children (and adults) live in, produce no vitamin D for bones. Vitamin D is critical for preventing osteoporosis, a fact that is most noteworthy for this discussion. Without vitamin D, weak bones develop in adults and rickets can develop in children.
Bone strength in children: Rickets is making a comeback.
Rickets is a horrible, disfiguring children’s bone disease. And, before the population became terrified of sun exposure, rickets was at one time considered to be eradicated. Hence, people are surprised to find out that the bones of children are deteriorating. Hence, rickets is making a frightening comeback, it is rearing its ugly head even in sun drenched southern states. That is probably because the children are inside, avoiding the sun and concentrating on their technology. Of course, disuse of the body during this sedentary state also causes loss of calcium, thus causing weakness.
Can “sun supplementation” stop or reverse bone loss?
Therefore, the latest research on UV supplementation is exceptionally important in this world of indoor artificial light. First of all, rats exposed to long–term low-dose ultraviolet irradiation showed an increase in bone formation rate. Furthermore, there was a decrease in resorption (bone breakdown). And, there was an improvement in bone mass content and bone mineral density without any adverse effects on skin. Consequently, this research shows that the concept of ultraviolet light causing skin cancer is incorrect. Also, it corroborates how effective ultraviolet light is in maintaining and increasing bone mass. For example, a Spanish study shows that women who are sun-seekers are protected from bone loss. They have only one/11 the risk of hip fracture as those who avoid the sun.
Bring the UV light inside to protect bone and enhance wellbeing.
In conclusion, this research demonstrated a concept that had never occurred to me. If we can’t bring the children (or adults) out into the sunlight, perhaps we can bring the sunlight inside to them. Also, it seems like a great idea to use low-intensity ultraviolet light indoors for northern climes where sunlight is scarce in the winter. I guarantee that it will also improve moods, reduce seasonal affective disorder and otherwise enhance the health. So remember regular, non-burning sun exposure when you consider a healthful lifestyle.
 Basatemur E, Horsfall L, Marston L, Rait G, Sutcliffe A. Trends in the Diagnosis of Vitamin D Deficiency. Pediatrics. 2017 Mar;139(3).
 Weisberg P, Scanlon KS, Li R, Cogswell ME. Nutritional rickets among children in the United States: review of cases reported between 1986 and 2003. Am J Clin Nutr 2004;80(6 Suppl):1697S-705S.
 Guo R, Du Y, Zhang S, Liu H, Fu Y. The effects of ultraviolet supplementation to the artificial lighting on rats’ bone metabolism, bone mineral density, and skin. J Photochem Photobiol B. 2018 Aug 27;188:12-18.
 Larrosa M, Casado E, Gómez A, Moreno M, Berlanga E, Ramón J, Gratacós J. Vitamin D deficiency and related factors in patients with osteoporotic hip fracture. Med Clin (BARC) 2008;130:6-9.