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What are antioxidants? What do they do? Should you be taking them? How much is enough, or too much? Dr. John Smythies explores these and other questions you need to have answered about antioxidants in Every Persons Guide to Antioxidants. Oxidants are naturally occuring chemicals in our bodies that derive from oxygen to facilitate essential biochemical processes. However, most oxidants are potentially toxic molecules and the body contains a number of antioxidants for protection against these toxic effects. Overproduction of oxidants, or underproduction of antioxidants, leads to oxidative stress, which has been linked to a wide range of chronic diseases, including heart disease, cancer, diabetes, and Alzheimers. Smythies thoroughly evaluates current scientific work on this subject and suggests that a high proportion of many of these diseases can be prevented, or their onset delayed, by proper intake of antioxidants. He examines the pros and cons of the debate over how this necessary intake should be achieved, by eating more fruits and vegetables or by taking supplements in pill form. Smythies surveys the toxicity of antioxidants and recommends under what circumstances they should be given with caution or not at all. He also discusses whether taking supplements requires medical supervision and lists good sources of antioxidants in fruits and vegetables

Oxidation, Physiological --- Antioxidants --- Free Radicals (Chemistry) --- Science --- Medical --- Oxidation, physiological --- Free radicals (chemistry)

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In Free Radical and Antioxidant Protocols, seventy-six leading international authorities describe cutting-edge methodologies for quantifying free radical and antioxidant analytes in tissue and body fluids using experimental models and in vitro procedures. These user-friendly and easily reproducible techniques cover the essential tasks, including radical generating systems, direct measurement or trapping of reactive radical species and acute-phase proteins, and measurement of metabolic intermediates derived from the oxidation of lipids, proteins, and nucleic acids. There are also methods for the determination of vitamin, enzymatic, and water-soluble antioxidants, as well as of essential micronutrients and cofactors. The techniques take advantage of new instrumentation-probes, photon counting, chemiluminescence, and caged compounds, with an emphasis on HPLC-and are adaptable to a wide range of applications. Free Radical and Antioxidant Protocols provides state-of-the-art methodology and biotechnology in a convenient format for both academic and corporate biomedical scientists. The detailed, laboratory-tested free-radical assays, many of them presented here for the first time, will illuminate the study of both primary and secondary oxidative stress and contribute significantly to our understanding of the many disorders associated with this process.

Analytical biochemistry --- Free radicals (Chemistry) --- Antioxidants --- Oxidation, Physiological --- Stress (Physiology) --- Pathophysiology --- Laboratory manuals. --- Physiological effect --- Research --- Laboratory manuals --- Enzymes --- Oxygène --- Oxygen --- Consommation d'oxygène --- Oxygen consumption --- Métabolisme des lipides --- Lipid metabolism --- Oxydation --- Oxidation --- Life sciences. --- Biochemistry. --- Life Sciences. --- Biochemistry, general. --- Biological chemistry --- Chemical composition of organisms --- Organisms --- Physiological chemistry --- Biology --- Chemistry --- Medical sciences --- Biosciences --- Sciences, Life --- Science --- Composition --- Biological oxidation --- Oxidation, Biological --- Physiological oxidation --- Biochemistry --- Chemical inhibitors --- Physiological stress --- Tension (Physiology) --- Adaptation (Biology) --- Radicals (Chemistry) --- Free radical reactions --- Free radicals (Chemistry) - Pathophysiology - Laboratory manuals --- Antioxidants - Physiological effect - Laboratory manuals --- Oxidation, Physiological - Laboratory manuals --- Stress (Physiology) - Research - Laboratory manuals