a. Exception polar bear liver is high in vitamin A.b. Megadose is 10Xthe RDA recommended dietary (daily) allowance or DV (daily value)Usually toxic reactions are from vitamin and mineral supplement2. Examples of problemsa. Fats - can lead to heart diseaseb. Fat soluble vitamins cause toxic reactions, vitamin A can cause damage to kidney,liver or bone.c. Large doses of vitamin B6 - causes problems in the nervous system, abnormalnumbness or poor coordination.b. Not enough not good1. Too little water - dehydration - causes headache, dizzy, confused, sunken eyes.2. Low doses of iron - decreases the ability to work, irritability.c. May vary with each individual.1. Genetics2. Lifestyle3. Health considerations
d. How much is too much?
How much is enough?1.RDA - recommended dietary (daily) allowance (or DV daily value)is the amount needed to prevent a deficiency- not what is needed to maximize health.2. Supplement Sales PeopleAre selling products to make money. * Be cautious & informed.3. The best amount may be in between for many supplements.e. Excess of some Nutrients are stored.1. Fat soluble vitamins are stored2. Excess dietary intake of protein, carbohydrates and fats are stored as fat in the body5. Source of vitamins and minerals*micronutrients - milligrams*no energy - may help regulate the production of energy from macro nutrientsa. Fresh is best source because storage, processing and cooking often result in lossExceptions * Lycopene from tomatoes and carrots-B- carotene is accessible after some cookingb. Skin/peelings are often a good source- but what often has the chemicals – herbicides c. Processed white flour has very little nutrients13