Vitamins - roles in the body

The role of vitamins in metabolism, the immune system and tissue health

Fat-soluble vitamins (A, D, E, K)
Vitamin A - vision (especially night vision), skin and mucous membrane health, immune system function
Vitamin D - calcium absorption, bone and tooth health, immune system function support
Vitamin E, antioxidant - protects cells from oxidation, supports immune defense
Vitamin K - blood clotting, bone metabolism

Water-soluble vitamins (B group + C)
Vitamin B1 (thiamine) - energy metabolism, nervous system function
Vitamin B2 (riboflavin) - energy metabolism, skin and mucous membrane health
Vitamin B3 (niacin), energy metabolism, nervous system function, skin health
Vitamin B5 (pantothenic acid) - fat and carbohydrate metabolism, hormone and vitamin D production formation
Vitamin B6 (pyridoxine), protein metabolism, nervous system function, red blood cell formation
Vitamin B7 (biotin) - hair, skin and nail health, energy metabolism
Vitamin B9 (folate, folic acid) - cell division, fetal nervous system development, red blood cell formation
Vitamin B12 (cobalamin), nervous system function, red blood cell formation, DNA synthesis
Vitamin C (ascorbic acid), antioxidant, immune system support, iron absorption, connective tissue formation (collagen)

Vitamins are essential for the following functions, among others: metabolism (especially B vitamins), immune defense (A, C, D, E), bones and teeth (D, K, A), nervous system function (B1, B3, B6, B12), cell protection and regeneration (C, E, folate, B12)