Showing posts with label Found. Show all posts
Showing posts with label Found. Show all posts

Tuesday, November 15, 2011

Antioxidants Naturally Found in Foods


Why do we need to eat foods that are found to be naturally high in antioxidants?
What are antioxidants?
Which foods do we need to eat, in order to naturally fight free radicals?

Scientists have found that the body forms unstable oxygen molecules, called free radicals; every cell produces tens of thousands of them each day. A free radical is basically an atom with an odd number of electrons in its outer ring. Since electrons have a very strong tendency to exist in a paired rather than an unpaired state, free radicals indiscriminately pick up electrons from other atoms, which in turn convert those other atoms into secondary free radicals, thus setting up a chain reaction, which can cause substantial biological damage. This, in short, is bad. There are also many kinds of free radicals, which we are exposed to everyday, for example, pollution, radiation, cigarette smoke and herbicides.

Antioxidants are thought to neutralise and stabilise these free radicals.

So, which antioxidants are naturally found in which foods?

We have:

Vitamin E: a fat-soluble vitamin found in vegetable oils, nuts, green leafy vegetables, and fortified cereals. Some of the foods containing the highest amounts of vitamin E are wheat germ oil, almonds, sunflower seeds, sunflower oil, hazelnuts, peanuts, spinach, broccoli, kiwi and mango.
Vitamin E is an antioxidant vitamin involved in the metabolism of all cells. It protects vitamin A and essential fatty acids from oxidation in the body cells and prevents breakdown of body tissues.

Vitamin C: Ascorbic acid is a water-soluble vitamin present in citrus fruits and juices, cabbage, green peppers, broccoli, spinach, tomato, kale, guava, cantaloupe, kiwi, papaya, and strawberries.
It is important in forming collagen, a protein that gives structure to bones, cartilage, muscle, and blood vessels. Vitamin C also aids in the absorption of iron, and helps maintain capillaries, bones, and teeth.

Beta-carotene: Beta-carotene is a precursor to vitamin A. It is present in liver, egg yolk, milk, butter, spinach, carrots, squash, broccoli, yams, tomato, cantaloupe, peaches, and grains.
Studies have been done on beta-carotene's effectiveness for heart disease, cancer, chronic fatigue syndrome, Alzheimer's disease, fibromyalgia, male infertility, and psoriasis.

Coenzyme Q10: CoQ10 boosts energy, enhances the immune system, and acts as an antioxidant. A growing body of research suggests that coenzyme Q10 may help prevent or treat some of the following conditions: heart disease, high blood pressure, high cholesterol, diabetes, and others. Primary dietary sources of CoQ10 include oily fish, organ meats such as liver, spinach, broccoli, peanuts, wheat germ and whole grains.

Selenium: Selenium is a trace mineral that is essential to good health but required only in small amounts. It helps synthesize antibodies; helps synthesize co-enzyme Q10and helps transport ions across cell membranes. The best sources of selenium are Brazil nuts, wheat germ, molasses, sunflower seeds, whole wheat bread and dairy foods.

You should note that there are many other antioxidants naturally found in foods.
You should also note that the best way to take antioxidants is naturally, through fresh, vibrant food.
One more thing; sometimes less is more. Some of these antioxidants are only needed in small amounts, so check into whether you need to take more or not, before you start overdosing on antioxidants!



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Sunday, October 23, 2011

Brazilian Superfruit Found to Kill Cancer Cells


A recently completed University of Florida study has added to the buzz surrounding the Brazilian acai berry. The study is one of the first to research the many claims attributed to the acai fruit.

In it's study, six different chemical extracts were made from acai berry pulp, and each extract was prepared in seven concentrations.

At least 4 of the extracts killed a great many cancer cells when applied for 24 hours or more. Anywhere from 35 percent to 86 percent of the cancer cells were destroyed, depending on the particular extract and concentration.

According to Stephen Talcott, an assistant professor with UF's Institute of Food and Agricultural Sciences, the study showed extracts from acai berries triggered a self-destruct response (apoptosis) in up to 86 percent of leukemia cells tested

Talcott, however, cautioned against reading too much into the results, noting that the tests were run against cancer cell cultures and not on human test subjects.

Still, the results are exciting. In the last year, the Brazilian berry has really taken off in the United States. It has also caught the attention of many companies who are now creating products that include the acai berry.

Although, acai berries are thought to be one of the richest fruit sources of antioxidants, other antioxidant rich fruits have been shown to kill cancer cells in similar studies.

Antioxidants are substances that may protect cells from the damage caused by unstable molecules known as free radicals. Free radical damage is theorized to be one of the main causes of cancer. A sufficient amount of antioxidants are thought by many to short-circuit this process by interacting with and stabilizing the free radicals and may stopping the damage that they do to healthy cells.

Experts are divided on just what effect antioxidants have on cancer cells in the human body, because of the many other lifestyle factors that have to be factored into the equation.

Many anecdotal claims have been made for the acai berry. And traditionally Indians in the Brazilian rain forest have used it in ways as diverse as food, house thatching, drink, diarrhea, jaundice, fevers, and as treatment for many other health diseases.

The University of Florida study is a welcome step towards getting away from some of the claims of acai and subjecting it to controlled studies.

"A lot of claims are being made, but most of them haven't been tested scientifically," Talcott said. "We are just beginning to understand the complexity of the acai berry and its health-promoting effects."



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