Chapter 56 Determinants of Vitamin D Deficiency from Sun Exposure A Global Perspective - Jan 2024
In book: Feldman and Pike's Vitamin D, vol. 2, Disease and Therapeutics
William Burgess Grant, Pal Bhattoa Harjit, Pawel Pludowski
Vitamin D deficiency, generally defined as 25-hydroxyvitamin D (25(OH)D) concentration <50 nmol/L, affects nearly half the world's population. Solar ultraviolet B (UVB) exposure is the primary source of vitamin D for most people. Many factors affect 25(OH)D concentrations related to solar UVB exposure, including skin pigmentation, solar zenith angle, atmospheric aerosols and clouds, time spent in the sun, amount of skin surface area exposed, use of sunscreen, age, and body mass index. Cultural and lifestyle differences-such as beauty standards, including high regard for fair skin in darker-skinned populations and avoidance of wrinkling; occupation; religion; urban/rural residence; and fear of developing skin cancer or melanoma-also affect some of those factors. Thus, fortification of food with vitamin D and vitamin D supplementation would have to be employed to compensate for unavoidable or inconvenient lack of solar UVB exposure.
Download the draft PDF from Research Gate via Vitamin D Life
Vitamin D Life – Noontime sun and D category contain
Noontime sun and D hassee also
No – 10 minutes per day of sun-UVB is NOT enough
Vitamin D Myths - SUN
Optimize vitamin D from the sun
Overview Suntan, melanoma and vitamin D
Overview UV and vitamin D
50 ng of Vitamin D - 100 hours of noon sunbathing OR 3 dollars of Vit D
3.3 X more likely to be Vitamin D deficient if wear long-sleeves – Oct 2022
Sun and UV
Avoiding the sun may be as bad as smoking - many studies
Vitamin D from the sun without the heat (silver-coated plexiglass)
Opinion: sun better than UV better than vitamin D
Avoiding the sun may be as bad as smoking - many studies
Fewer cognitive problems if more sun or Vitamin D
Which Is Worse - Avoiding Sunlight or Vitamin D Deficiency – April 2019
Have We Gotten Sunscreen Totally Wrong - Jan 2019
The Greatest Public Health Mistake of the 20th Century (sunscreen block Vitamin D) - 2017
Does Less Sun mean More Disease 5 minute video
340,000 US deaths annually due to insufficient sun (some due to low vitamin D) – July 2020
Health benefit of Sunlight is more than Vitamin D in the blood - many studies
5 Amazing Properties of Sunlight You've Never Heard About
Vitamin D and Sun conference – Germany June 2017
| 256 visitors, last modified 10 Jan, 2024, |