Posts Tagged ‘antioxidants’

12
March

Antioxidants: Eat All Your Colors!

Antioxidants are all the rage today. And, justifiably so. Antioxidants help neutralize free radicals which cause cell damage, which ultimately can lead to diseases of the heart and cancer. It seems everywhere you go its blueberry this and blueberry that. You have your choice of wild blueberry juice, blueberry-pomegranate juice, blueberry-cranberry juice and so on and so on.

Now, don’t get me wrong. I love blueberries. But, in our rush to embrace the latest antioxidant food craze (blueberries, cranberries, pomegranates) we’re ignoring some very high-antioxidant foods that are probably sitting ignored in our cupboards.

“What?” You ask, “What could possibly be higher in antioxidants than my beloved wild blueberry?” Well, how about the small red bean? That’s right, I said “bean.” The small red bean actually has more antioxidants per serving size than the wild blueberry. And the red kidney bean and pinto bean have more antioxidants per serving size than a serving of cultivated blueberries.

What other foods are high in antioxidants? For starters, there are artichoke hearts, blackberries, prunes, pecans, spinach, kale, russet potatoes and plums. And, no, that’s not a mistake. Russet potatoes are on the list of foods high in antioxidants.
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5
February

Amazing Antioxidants

The prefix ‘anti’ means against, in opposition to, or corrective in nature. In this case, the ‘anti’ in antioxidant describes the effect these chemicals have against oxidants.

Oxidants, usually referred to as ‘free radicals’ are produced as a natural by-product of the millions of biochemical processes undertaken by the body every minute. The same life-giving oxygen that supports all the functions of the body creates these harmful by-products which cause cell damage, usually to DNA, fats and proteins.

Free radicals also enter the body through external influences such as exposure to the sun, pesticides and other kinds of environmental pollution. In addition, their levels are increased by mental and physical stress, the consumption of alcoholic beverages, unhealthy foods, and cigarette smoke.

In much the same way as oxidation causes rust on cars, oxidation inside the body causes a breakdown of cells. If the amount of free radical oxidation in the body is allowed to rise to an unhealthy level, it can result in extensive damage to cellular components and can accelerate the ageing process.

More importantly, it may contribute to a wide range of degenerative illnesses and reduce the body’s ability to deal with other problems, including cardiovascular malfunction, eye disease, and cancer.

Additionally, it may result in a compromised immune system, leading to immunological disorders and a lessening of the body’s ability to heal wounds and overcome infections. Some studies indicate possible links to arthritis and similar chronic conditions.
Antioxidants counter these effects by binding with free radicals before they can cause damage. They then convert them into non-damaging biochemical substances, assisting enormously with the reparation of cellular damage.
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24
November

Antioxidante, Free Radicals and Sports Nutrition

As you know, I am a physician. It’s part of my profession to keep abreast of what’s happening in medical /health research. Being retired helps, because doctors simply do not generally have the “extra time” to devote to the scientific literature.

But I do. And I love it. I am one of those individuals who really enjoys …brace yourself…chemistry. When I’m done here, you should be excited too, especially if you are interested in sports nutrition and antioxidants, though not necessarily in that order.

Sports nutrition is a vast industry with emphasis on optimizing PERFORMANCE. Off hand, I can think of quite a few categories involving sports nutrition:

” sports nutrition and supplements for athletes,
” sports nutrition and athletic performance,
” sports nutrition and body building,
” sports nutrition and endurance training,
” sports nutrition and special diets in a variety of sports,
” sports nutrition and strength training,
” sports nutrition for running, jogging, walking, skiing, swimming
” There’s even Rocky Mountain sports nutrition
” …the list is endless.

So far, no surprises, huh? Well, here’s one for you. Did you know that when you exercise intensively you INCREASE the free radical burden in your body? If you’re a serious sports enthusiast, you should know that.

But…the real news is what science is now finding out about that free radical burden of yours. You should pay close attention here.

Suddenly, chemistry gets real personal.

Everyone of us has, what may be called, our antioxidant protective capacity. That means our bodies normally utilize antioxidants to protect us against the harmful impact of free radicals.

First of all, what are antioxidants? They are molecular substances which offset free radical damage to the body. Antioxidants, “quench” free radicals (for lack of a better metaphor) neutralizing their damaging effects on the cells of the body.

” Antioxidants are found in foods such as cranberries, green tea and even chocolate.

” Antioxidants are found in vitamins such vitamin C and E.

” Antioxidants are found in carotenoids such as beta-carotene.

” Antioxidants are found in many substances supplied by the body such as glutathione.

” Antioxidants are found in many herbs and enzymes.
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13
November

Antioxidant Supplement

The focus of research on vitamins these days is how antioxidant supplements may play a role in reducing the risk of cardiovascular disease. Antioxidant supplements – E, C, and beta-carotene (a form of vitamin A) – have potential when it comes to health promotion. However, most data available about such health promoting properties of antioxidant supplements are incomplete. And only up to 30 percent Americans are taking some form of antioxidant supplements.

But what exactly are antioxidants and how important are they?

Antioxidants come in two forms. They can either be vitamins or minerals. They help prevent oxygen from reacting with other chemicals in cells. Such reactions – called oxidation – could lead to cell damage which may result in heart disease and cancer.

Antioxidants can be found in a variety of foods, but they are far more common in fresh fruits and vegetables. A health diet of fresh produce could lead to high levels of antioxidants in your body, which could only mean one thing – less free radicals (those harmful molecules that cause cell damage) and a healthier you.

When antioxidants start to work, they destroy the free radicals or break the chain. You see, here’s what happens when you have lots of free radicals in your body. Because they are highly unstable, these free radicals have the tendency to steal or get electrons from stable molecules and in so doing, make those molecules unstable as well, turning them into free radicals. This becomes a long chain and will go on and on until such a chain in broken. This is where antioxidants come in whose sole function is to break the chain and neutralize free radicals.
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