NHM 101 Lecture Notes - Lecture 11: Osteoporosis, Osteomalacia, Carotene

• School: University of Alabama
• Department: Food Science
• Course: NHM 101
• Professor: Rusung Tan

Document Summary

Insoluble in the watery juices of the gi tract: require bile to be digested and absorbed, efficient absorption needs adequate dietary fats, when absorbed go to lymphatic system and then the blood stream, excesses are stored in the liver and adipose tissue, retrieved from storage when needed, risk of toxicity is greater. Vitamin a: many different forms of vitamin a, retinol (alcohol form, retinal (aldehyde form, retinoic acid (acid form, carotenoids, carotenoids are pigments found in plants, some carotenoids can be converted to vitamin a in the body, such as beta carotene, functions, vision. Support reproduction and regulate growth: participates in sperm development, supports fetal growth, beta carotene acts as an antioxidant, recommendations, rda for men: 900 mcg/day, rda for women: 700 mcg/day, ul: 3000 mcg/day, food sources, animal foods: Vitamin a deficiency is the leading cause of preventable blindness: total blindness in the world, infectious disease, toxicity, megadoses of vitamin a may pose risk for toxicity.