tailieunhanh - Lecture Discovering nutrition - Chapter 7a: Spotlight on dietary supplements and functional foods

After studying this chapter you will be able to understand: Dietary supplements: vitamins and minerals, dietary supplements: natural health products, dietary supplements in the marketplace, functional foods. | Spotlight on Dietary Supplements and Functional Foods Dietary Supplements: Vitamins and Minerals Various forms Vitamins, minerals, amino acids, herbs, glandular extracts, enzymes, etc. Moderate Supplementation In the range of the Daily Values (DVs) Megadoses High levels; multiples of the DVs Dietary Supplements: Vitamins and Minerals Moderate supplementation Increased nutrient needs and/or poor intake Women of childbearing age who may become pregnant Pregnant and breastfeeding women Women with heavy menstrual losses Children Dietary Supplements: Vitamins and Minerals Moderate supplementation Increased nutrient needs and/or poor intake Infants People with severe food restrictions Strict vegetarians who abstain from animal foods and dairy products Older adults Others Dietary Supplements: Vitamins and Minerals Moderate supplementation Look for brands that contain at least 20 vitamins and minerals No more than 100% of its DV Dietary Supplements: Vitamins and Minerals Megadoses in conventional medical management Conventional medicine Drug interactions Malabsorption syndromes Treatment of deficiencies Druglike effects Dietary Supplements: Vitamins and Minerals Megadosing beyond conventional medicine: orthomolecular nutrition Achieving the optimal nutrition levels in the body Drawbacks of megadoses Can act as a drug Can create deficits of other nutrients Can interfere with absorption of others Dietary Supplements: Natural Health Products Natural health products Herbal therapy (phytotherapy) Traditional medical practices Little scientific evidence of efficacy, safety Dietary Supplements: Natural Health Products Helpful herbs, harmful herbs St. John’s wort Milk thistle Ginkgo biloba Saw palmetto extract Cranberry juice Dietary Supplements: Natural Health Products Helpful herbs, harmful herbs Strong enough to help, strong enough to hurt Can interfere with standard medicines DANGER: Examples of products with toxic side effects St. John’s . | Spotlight on Dietary Supplements and Functional Foods Dietary Supplements: Vitamins and Minerals Various forms Vitamins, minerals, amino acids, herbs, glandular extracts, enzymes, etc. Moderate Supplementation In the range of the Daily Values (DVs) Megadoses High levels; multiples of the DVs Dietary Supplements: Vitamins and Minerals Moderate supplementation Increased nutrient needs and/or poor intake Women of childbearing age who may become pregnant Pregnant and breastfeeding women Women with heavy menstrual losses Children Dietary Supplements: Vitamins and Minerals Moderate supplementation Increased nutrient needs and/or poor intake Infants People with severe food restrictions Strict vegetarians who abstain from animal foods and dairy products Older adults Others Dietary Supplements: Vitamins and Minerals Moderate supplementation Look for brands that contain at least 20 vitamins and minerals No more than 100% of its DV Dietary Supplements: Vitamins and Minerals