Take the supplement of the astronauts

Apparently all astronauts from all countries take Vitamin D
Some astronauts also take
    Magnesium, Vitamin K for bones (in addition to Vitamin D)
    Vitamin B-12, Folate for vision ( [in addition to vitamin D](/pages/vision/) )

See also VitaminDWiki

• The only supplement NASA gives crews is vitamin D - Sept 2015

• Additional NASA and Vitamin D

  Other than NASA

• Military and Vitamin D - many studies

• Olympic Committee consensus on Vitamin D, Omega-3, Zinc, etc– May 2018

  • Olympics committee finally approved vitamin D (Vit D and UV has been used in Olympics since the 1940s)

• Lack of Vitamin D Can Sideline College Football Players – Jan 2018

• NHL discovers Vitamin D – their ideal is 40-120 ng – 2016

• Elite Athletes Try a New Training Tactic: More Vitamin D - WSJ Jan 2016

• 1 tiny pill every two weeks fights all of the following

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