MOVESCI 241 Lecture Notes - Lecture 5: Beta-Carotene, Hypervitaminosis A, Rodenticide

• School: U of M
• Department: Movement Science
• Course: MOVESCI 241
• Professor: Professor Brown

Document Summary

The government adds vitamins to foods to help ppl get the vitamins they need. Vitamins have no particular chemical structure in common. Provitamins (aka previtamins) are inactive precursors to vitamins. Adding things in which can lead to the vitamins we need. Ex - beta -carotene sometimes called provitamin a (retinol =vit a) They are needed in small quantities (micro vs macro) Deficiencies and excesses of micronutrients can affect health. Water soluable - you pee it out if you have it in excess. B complex = thiamine (b1) riboflavin (b2), pyridoxine (b6) niacin (nicotinic acid) pantothenic acid, biotin, folic acid, cobalamin (b12) Dissolve and stored in the body"s fatty tissues. Dietary lipids are a source of fat-soluble vitamins. Should not be consumed in excess without medical supervision. Vt a retinoids = toxicity can inhibit cells that produce new bone and stimulate cells that break down existing bone.