NUTR100 Lecture Notes - Lecture 6: Prostate Cancer, Adipose Tissue, Epithelium

• School: University of Alberta
• Department: Nutrition
• Course: NUTR100
• Professor: Sabina Valentine

Document Summary

Since fat soluble vitamins are stored in the body so there is less risk of deficiency but the risk of toxicity is high. Since they are stored in liver and adipose tissue, they have a greater risk of toxicity. Since we are living at a northern latitude, we are not synthesizing vitamin d enough. Vit a: preformed vit a comes from animal food. Found in anything orange and some green vegs. But it does not selectively prevent prostate cancer. Vit a has a very important role in cell differentiation. Cells that are part of the epithelial tissue like skin, lungs. When light hits visual pigment rhodopsin (retinal (is in a bent form but straightens and released) and protein opsin) retinal is lost from the cycle. The regeneration of rhodopsin is delayed if vit a deficient. Vit a and d can turn gene on and off.