By A. S. Troelstra
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Additional info for Choice Sequences: A Chapter of Instuitionistic Mathematics
28 Like almost all foods, dietary supplements must have an ingredient and nutrient label. Disease claims may not be made about diagnosis, prevention, treatment or cures, (for example, a product cannot claim to cure cancer or treat arthritis). But manufacturers can describe supplement effect on “structure or function” of the body (for example, folic acid can reduce the risk of neural tube birth defects; vitamin E promotes a healthy heart; or calcium may reduce the risk of osteoporosis). The manufacturer must be able to substantiate any statements made to be truthful and not misleading, but FDA approval is not required.
However, conflicting scientific data about their benefits and increasing incidences of reported adverse events raise questions about the wisdom of adding them to an already nutritionally adequate diet. Are antioxidants really our answer to increased longevity and reduced chronic diseases? The answer is far more complex than most of us realize and for the remainder of this chapter we will dive into the complex workings of the antioxidant world. In very simple terms, dietary antioxidants are substances found in the human diet that have the potential to decrease the adverse effects of free 32 Understanding the Antioxidant Controversy radicals within our bodies.
In 2000, the Institute of Medicine (IOM) defined the term antioxidant and published antioxidant recommendations. ”18 Vitamin C is considered an antioxidant because of its ability to render harmful free radical reactions harmless. Vitamin E is believed to work as a chain-breaking antioxidant by preventing lipid peroxidation, which is the interaction between free radicals and cell membrane lipids that can cause cell damage. Selenium functions as an oxidant defense enzyme. Carotenoids are important primarily because they convert into vitamin A when needed and are theorized to have The Science of Nutrition 21 possible antioxidant activity.
Choice Sequences: A Chapter of Instuitionistic Mathematics by A. S. Troelstra