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UA NHM 101 - Dietary Supplements
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NHM 101 1nd Edition Lecture 29 Outline of Last Lecture I. Fitness: Physical Activity and Nutrients Outline of Current Lecture II. Dietary Supplements Current Lecture- $24 billion spent each year on supplements- 1 out of 3 individuals takes a MVI- Many others take a specific vitamin/mineral supplement- Most individuals self-prescribe supplements Reasons for Dietary Supplements- Prevent or correct deficiencies o Nutrient deficiencies o Low calorie intake - Reduce disease risks- Individuals who omit certain foods - Meet needs during life stages where needs are increased Arguments Against Dietary Supplements - Toxicity- Provide individuals with a false sense of securityo Prevent or cure diseaseo Provide energyo Enhance athletic performance- Marketing is often misleading- Evidence is insufficient for most dietary supplementsRegulation of Prescription Drugs- FDAs center for drug evaluation and research (CDER)o Covers prescription and non-prescription drugs- Responsibility of drug company to submit evidence that drug is safe and effectiveThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.- CDER reviews study data and proposed labeling - Typically takes years from initial application to drug being on the shelfRegulation of Dietary Supplements- Regulated by the FDAo Defined by the dietary supplement and health education act of 1994- What does DSHEA say?o Labeling is requiredo Labels may make health claims but cannot be brand specific o Labels may claim to diagnose, treat, cure or relieve common symptoms bot not a diseaseo All must include FDA disclaimer This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.Take Home Point: Supplements are LOOSELY regulated by the FDA- Do require good manufacturing practices but are not tested- FDA must prove that supplements poses a significant or unreasonable risk of illness of injuryChoose the Right Supplement - Look at the label- Is it tested by a independent company to back up good manufacturing practices?- Is it safe?- Is it legal?- Is there evidence that prove its effectiveness?Some Popular Supplements- Caffeine- Creatine- MVI- Vitamin CComplementary and Alternative Medicine - Complementaryo Treatment that is considered unconventionalo Used along with conventional medicineo Insufficient evidence of purported effects- Alternativeo Treatment that is considered unconventionalo Used IN PLACE of conventional medicineo Insufficient evidence of purported effectsNutrition as Complementary/Alternative Therapy - Vitamin/Mineral supplements- Herbal Remedieso Echinaceao Ginsengo Gingero Gingko bilobao Yohimbe Herbal Precautions- Plants are natural but may not be safe- Purity - Is it effective? - Variability of an herb- Safe


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