Less time in the SUN (13 of 27 reasons)

1. Air conditioning - to avoid the hot sun
2. Increased use of multi-media indoors
3. More indoor jobs - more office workers, fewer farmers
4. Living in cities more
5. Want whiter skin - especially women
6. Fear skin cancer -
7. Cholesterol reduced
8. More Obesity
9. Soft drink cola
10. Meat from factory farms
11. Some drugs consume or block vitamin D
12. increased use of polyunsaturated fats
13. More windows appear to destroy vitamin D (added March 2012)
    
    14 reasons are more than 40 years old
    
14. Eat less liver - which used to have very large amounts of vitamin D
15. Less Magnesium in foods
16. More Seniors
17. Excessive clothing (burka, nun habit, . . .)
18. Have a condition which Consumes vitamin D
19. Have a condition which Prevents Adsorption in the gut
20. Have a condition which Prevents Conversion to active form
21. Have a condition which requires more vitamin D
22. Lactose Intolerance or Vegan
23. Health reasons to avoid sun
24. Work long hours or night shift
25. Live far from equator
26. DDT in our bodies reduce the vitamin D
27. Myths about vitamin D

See VitaminDWiki

• Many reasons why vitamin D deficiency has become epidemic with links and charts
• All Overviews 46 overviews as of March 2012
• Seniors Vitamin D Workshop Most of vitamin D concerns/issues on a single web page
• Overview Evidence for vitamin D
• Vitamin D PREVENTS many diseases and TREATS some
• Many kinds of pain relieved by vitamin D
• All items in Vitamin D Blog
• Home Page