FSN 101 Lecture Notes - Lecture 7: Retina, Diarrhea, Keratin

• School: University of Maine
• Department: Food Science and Nutrition
• Course: FSN 101
• Professor: Anthony Perkins

Document Summary

Yield no energy (consume in small amounts)**: facilitate energy-yielding chemical reactions, function as co-enzymes. Types of vitamins: fat-soluble vitamins, water-soluble vitamins. Vitamins were named in order of discovery (a,b,c,d ) Other substances found not to be essential were dropped. B-vitamins were thought to be one vitamin; turned out to be many (b1,b2,b3 . ) Megadose (>3-10x needs as a starting point: proved useful in treating certain conditions. Most synthesized vitamins work equally well in the body. Scientists believe they have discovered all the vitamins *** Water soluble: not readily excreted (except vitamin k, generally lost from the body (except vitamins b6 and b12, excreted via urine. Vitamins should be consumed daily: occasional lapse is harmless. Fat soluble: can accumulate in the body, do not need to consume every day. Mostly likely due to supplementation: some can cause toxicity, should consume everyday, but ok to miss occasionally, vitamin pills, highly fortified foods.