Concept explainers
What are the arguments for obtaining antioxidants from foods, supplements, or both?
To mention: The arguments for obtaining antioxidants from foods, supplements, or both.
Concept introduction: Nutrients are substances that are essential for the maintenance of life. Dietary supplements meet the needs of the body nutrients which are not obtained from the diet. Antioxidants are molecules that destroy the free radicals and maintain the body in healthy conditions.
Explanation of Solution
Antioxidants are molecules that quench the free radicals. Diet is a good source of antioxidants and nutrients, if taken in a balanced quantity. Fruits and vegetables are good sources of antioxidants that are associated with the diminished risk of many chronic diseases. Many dietary supplements are harmful such as beta-carotene, which has increased the risk of lung cancer and mortality in smokers. Selenium posed the diabetes risk and vitamin E posed the risk for prostate cancer as well as strokes. Supplement contents are limited, yet in the fruits and vegetables the phytochemical that acts as antioxidants are numerous. Taking too much of antioxidants as supplements can harm, because in high concentration it acts as a prooxidant and stimulate the free radical formation, and also affects the metabolism process. Therefore, it is advisable to get antioxidant from the regular diet instead of the dependency on supplements.
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Chapter 11 Solutions
Understanding Nutrition (MindTap Course List)
- Do you think that OSHA serves a valued objective today? Or should industry manage its own affairs without this type of regulation? Are there parts of OSHA that need improvement?arrow_forwardWhat exactly are pseudovitamins? What distinguishes them from vitamins? Compare these two in terms of characteristics.arrow_forwardWhich of the following is good advice for someone who wanted to know if they should take an antioxidant supplement? 1. People who don't get the vitamins from their diet should take supplements because these vitamins are essential to your health and most people don't get enough vitamins in their food. 2. Vitamin A and beta carotene supplements are not recommended, and as far as vitamin C is concerned, it's best to get it from foods because supplements can cause gastrointestinal distress, tooth damage and other problems and average intakes in the US meet or exceed recommendations. 3. Vitamin A and beta carotene are not recommended, but there is some evidence that vitamin C supplements cure the common cold and that people who smoke should take a supplement. 4. Vitamin A and beta carotene are not recommended, but vitamin C supplementation is recommended because it prevents colds, enhances immunity, protects against heart disease and cancer, and…arrow_forward
- c) How Vitamin C can act as an antioxidant?arrow_forwardWhat is meant by intermediary metabolism?arrow_forwardConcerning antioxidants, which one of the following statements is true? a. free radicals, reduce the toxic bi-products produced by antioxidants b. antioxidants allow oxygen to bond with other molecules, improving health and longevity c. taking antioxidant supplements decreases cancer rates d. antioxidants won't prolong your life, just make you healthierarrow_forward
- Understanding Nutrition (MindTap Course List)Health & NutritionISBN:9781337392693Author:Eleanor Noss Whitney, Sharon Rady RolfesPublisher:Cengage Learning