An antioxidant is a chemical that reduces the rate of particular oxidation reactions in a specific context, where oxidation reactions are chemical reactions that involve the transfer of electrons from a substance to an oxidising agent.
Antioxidants are particularly important in the context of organic chemistry and biology: all living cells contain complex systems of antioxidant chemicals and/or enzymes to prevent chemical damage to the cells’ components by oxidation. The importance and complexity of antioxidants in biology is reflected in a medical literature of more than 142,000 scholarly articles.
A diet containing antioxidants from plants are required for good health since plants are an important source of organic antioxidant chemicals. Antioxidants are widely used as ingredients in dietary supplements that are used for health purposes such as preventing cancer and heart disease. However, while many studies have suggested benefits for antioxidant supplements, several large clinical trials have failed to clearly demonstrate a benefit for the formulations tested, and excess supplementation may be harmful.
Antioxidants are chemicals that reduce oxidative damage to cells and biochemicals. Researchers have found high correlation between oxidative damage and the occurrence of disease. For example, LDL oxidation is associated with cardiovascular disease. The process leading to atherogenesis, artherosclerosis, and cardiovascular disease is complex, involving multiple chemical pathways and networks, but the precursor is LDL oxidation by free radicals, resulting in inflammation and formation of plaques.
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Your hair makes you look gorgeous, bold and beautiful. It is your hair because of which you attract attention of other people. So it is natural that you will always expect that your hair will look good and as that as people like them. But certainly your hair didn’t fulfill your expectations on every other day. Even though some time you feel disappointed because of your hair. The reason is simple; you are unable to keep them as you want and as others like them. In such a situation definitely, you would like to spend some time for your hair and then it is obvious to know about Hair Care.
But before jumping into those hair care tips it is equally important to know that what are the factors, which affects your hair and hairstyle?
The biologists argue that the characteristics of hair of a person depend on several factors some of which are inherited. Some factors are genetic means that DNA programming is responsible for your hairs the way they look. The secretion level of hormones also contributes to hair looks. And after all, the entire environment especially the air and water greatly affects your hairstyle. That’s why, every person some time experience the bad hair day. But if you are willing to take a little care, you can say good-bye to bad hair day, which might not be permanent and need your attention time to time.
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Buying an elliptical? You may want to look at several elliptical trainer ratings before buying to get an idea of which elliptical trainers are best for you.
Before you look at elliptical trainer ratings however, here are a few things you should know about how elliptical trainers are rated:
#1 Elliptical Trainers are Rated in Specific Price Groups
There are really 3 categories of elliptical trainers: Economy Buys, Mid-priced and Commecial Grade ellipticals.
Economy buys range from about $300 to $1000. Mid-priced ellipticals range from $1000-$2000. High End or Commercial elliptical trainers range from about $2200 and above.
When experts go to rate elliptical trainers they usually compare the elliptical trainers within price class.
So just because an economy elliptical trainer gets 5 stars and a mid-priced elliptical gets 4 stars, that doesn’t mean the economy elliptical is better than the mid-priced elliptical. It just means that compared to other economy elliptical trainers, that one is superior.
#2 Experts Value Elliptical Features Differently
Ever wonder why certain elliptical trainers get rated highly by some experts and not by others? It’s because different elliptical trainer raters value some features over others.
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Looking for help with losing weight? Help that goes beyond the usual lifestyle changes, portion control advice and exercise routines? Weight-loss supplements touting names like “fat burner” and “thermo max” can be enticing. But do they work? And even more important, in the wake of the Food and Drug Administration’s recent ban on ephedra, are they safe?
In this article, Environmental Nutrition provides a snapshot of 10 of the most popular ingredients currently in supplements for weight loss.
Chitosan
Made from the shells of lobsters, shrimp and other shellfish, chitosan is an indigestible fiber. It is supposed to help weight loss by binding with the fat you eat, blocking its absorption. However, studies do not support this claim. Side effects include constipation and gas. People with shellfish allergies should beware.
Chromium
Most often present as chromium picolinate, it has been promoted to boost lean mass and decrease body fat. Though study findings have been inconclusive, an analysis of several studies recently concluded that supplementing with 200 to 400 micrograms of chromium picolinate could result in about a 2.5-pound weight loss per week in some people. Other studies have found a loss of body fat and an increase in muscle tissue, with no change in weight. Still others have found no effect at all. Though some laboratory studies have raised safety issues, a large number of human studies suggest it is safe.
Citrus Aurantium (Bitter Orange)
This herbal extract is a natural source of synephrine (a compound similar to ephedrine) and the supplement industry’s current answer to the ephedra ban. But there are no published studies to show it is an effective supplement for weight loss. And like ephedra, its side effects include an increase in blood pressure; Environmental Nutrition recommends avoiding it.
Conjugated Linoleic Acid (CLA)
Both animal and human research hints at a possible role for CLA in reducing body fat and increasing lean body mass, but it’s not quite ready for prime time. None of the human studies have been long-term. CLA is currently being studied in combination with chromium picolinate. CLA is found naturally in dairy foods and beef and is generally considered safe.
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