HPRM-205 Lecture Notes - Lecture 8: Osteoporosis, Broccoli, Acne Vulgaris

• School: American University
• Department: Health Promotion
• Course: HPRM-205
• Professor: Professor Cressall

Document Summary

Vitamin: essential, non-caloric, organic nutrient needed in the diet in tiny amounts. Vitamin precursors: found in foods, become active inside the body once we eat them. Like lipids, absorbed in lymph and travel in blood with protein carriers. Stored in liver and fat; can build up to toxic levels. Food sources: fats and oils in foods. Deficiency occurs when diet is constantly low in them and with diets very low in fat. Vitamins a and d: act like hormones (direct cell activity) Vitamin e - guarded against oxidative reactions. Vitamin k - blood clotting and bone health. Absorbed directly into bloodstream and travel freely. Vitamin b (b1, b2, b3, folate, b12, b6, biotin) and vitamin c. Retinol - stored in liver, made available to cells when needed. Cells converted retiron to 2 other active forms: retinal and retinoic acid. Roles of vitamin a and consequences of deficiency: More profound deficiency can lead to permanent blindness.