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The Handy-Dandy, Exhaustive Guide To Vitamins & Minerals; Complete From Vitamin A to Zinc [Part 1]


What is Vitamin D

What is Vitamin D

Vitamin D is spectacularly unique because the body can source it from two radically different places — whole foods, the traditional route; and exposure to sunlight (specifically UVB rays), which triggers production in the skin.1

Vitamin D is brutally important for the absorption of calcium, which helps maintain strong teeth and bones; while deficiency leads to flimsy, brittle bones and osteoporosis. It also helps the body protect, rejuvenate, and maintain healthy skin cells; and supports nerve, muscle, and immune function.23

  • Best Sources of Vitamin D — Think SUNLIGHT, FISH & DAIRY. Milk, eggs, salmon, swordfish, oysters, tuna, sardines, yogurt, cod liver oil, and cereal are all vitamin D powerhouses.4
  • Recommended Daily Intake — Men = 600 IU/day; women = 600 IU/day.5
  • Vitamin D Deficiency — Weak bones, which can lead to rickets in children and osteomalacia/osteoporosis in adults.


Vitamins: Vitamin A | B Vitamins | Vitamin C | Vitamin D | Vitamin E | Vitamin K


Bryan DiSanto

Founder & Editor-in-Chief at Lean It UP
ELLO ELLO I'm Bryan DiSanto. I'm the Founder & Editor-in-Chief of Lean It UP, a CPT/CSN/Fitness Coach, Chef trained at Le Cordon Bleu – Paris, NYU graduate, ex-fat kid, and all-around fitness junkie.

I also contribute to Men's Health Magazine.

When I'm not working on my abs (or somebody else’s), whipping up avocado roses and avocado toast, or running a Tough Mudder, I'm probably yelling at a Carolina Panthers game somewhere.

Come be friends with me on Instagram (@BRYDISANTO) & Snapchat (BRYDISANTO).
Bryan DiSanto
  1. Holick MF, Chen TC, Lu Z, Sauter E. Vitamin D and skin physiology: a D-lightful story. J Bone Miner Res. 2007 Dec;22 Suppl 2:V28-33. []
  2. []
  3. ODS – Vitamin D []
  4. NutritionData – Vitamin D []
  5. ODS – Vitamin D []

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