FSN 210 Lecture Notes - Lecture 12: Cod Liver Oil, Breakfast Cereal, Provitamin

• School: Cal Poly
• Department: Food Science and Nutrition
• Course: FSN 210
• Professor: Megan Kitagawa

Document Summary

Vitamin d in food and vitamin d in sunshine. It is forti ed into food (milk, breakfast cereal) Uvb doesn"t come through glass but gives vitamin d. Prolonged exposure will not result in toxic amounts. Breastfed babies should be given vitamin d supplements. Calcidiol in the liver and calcitriol in the kidney. Formation of calcitriol is regulated by the parathyroid gland and kidneys. If blood calcium is low the gland makes parathyroid hormone. Pth increases production of calcitriol in kindly and restores calcium balance. Increases intestinal absorption of calcium and phosphorus when calcium is low. Releases calcium and phosphorus from bone to restore blog levels. Regulate: immune function, secretion of hormones, cell cycle. Poor calci cation of newly synthesized bones in adults. Deposits of ca ++ in kindeys, lung and heart. Protects lipids throughout the body, in turn all the cell membranes. Have to have fats in diets for these fat soluble vitamins.