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Monday, October 15, 2012

Cartenoids

An ANTIOXIDANT (which helps fight off cancer)"There are several dozen carotenoids in foods people consume, and most carotenoids have antioxidant activity (5)."
"Recent evidence introduces the possibility that lutein and zeaxanthin, carotenoids found in a variety of fruits and vegetables may protect against the common eye disease of macular degeneration (2)."

3


"There are over 600 known carotenoids; they are split into two classes, xanthophylls (which contain oxygen) and carotenes(which are purely hydrocarbons, and contain no oxygen). Carotenoids in general absorb blue light. They serve two key roles in plants and algae: they absorb light energy for use in photosynthesis, and they protect chlorophyll from photodamage.[2]In humans, four carotenoids (beta-carotene, alpha-carotene, gamma-carotene, and beta-cryptoxanthin) have vitamin A activity (meaning they can be converted to retinal), and these and other carotenoids can also act as antioxidants.
In the eye, certain other carotenoids (lutein and zeaxanthin) apparently act directly to absorb damaging blue and near-ultraviolet light, in order to protect the macula lutea.

People consuming diets rich in carotenoids from natural foods, such as fruits and vegetables, are healthier and have lower mortality from a number of chronic illnesses.[3] However, a recent meta-analysis of 68 reliable antioxidant supplementation experiments involving a total of 232,606 individuals concluded that consuming additional β-carotene from supplements is unlikely to be beneficial and may actually be harmful,[4] although this conclusion may be due to the inclusion of studies involving smokers.[5] With the notable exception of Gac and crude palm oil, most carotenoid-rich fruits and vegetables are low in lipids. Since dietary lipids have been hypothesized to be an important factor for carotenoid bioavailability, a 2005 study investigated whether addition of avocado fruit or oil, as lipid sources, would enhance carotenoid absorption in humans. The study found that the addition of both avocado fruit and oil significantly enhanced the subjects' absorption of all carotenoids tested (α-carotene, β-carotene, lycopene, and lutein).[6] (5)."


"Lemon water also contains carotenoids, some of which your body can convert into vitamin A. For instance, one large lemon contains 2 mcg of beta cryptoxanthin. One large lemon also contains 7 mcg of lutein and zeaxanthin combined, although these two carotenoids cannot be converted into vitamin A. According to the Office of Dietary Supplements, some studies show that carotenoids can act as antioxidants, but study findings are mixed (1)."

Fruit and vegetable carotenoids protect women from breast, ovarian cancer

10/8/2010 - Achieving good health and avoiding disease involves eating a variety of nutrient-rich foods on a regular basis, particularly those that together provide the full spectrum of phytonutrients that each contribute to a different aspect of good health. Unfortunately, many people are not getting the variety...

Carotenoids in veggies and fruits improve eyesight and prevent eye diseases

1/7/2010 - Countless moms have told their children to eat their veggies -- especially carrots -- in order to help their eyesight. It turns out that "old wives' tale" is actually sound science. According to a study just published in the Journal of Food Science, a publication of the Institute of Food Technologists,...

Astaxanthin: The Miracle Antioxidant and Anti-Inflammatory Nutrient

5/24/2009 - For years, I've been a strong proponent of astaxanthin, a remarkable nutrient sometimes called "King of the carotenoids!" Derived from microalgae (and also found in wild salmon), astaxanthin is on my list as one of the top three most important nutrients for human health. I take an astaxanthin supplement...

Lutein boosts eye health, preventing cataracts and macular degeneration

7/30/2005 - Fruits and vegetables have yet another disease-fighting weapon to offer you: Lutein. Studies show this carotenoid prevents and, to some extent, reverses vision loss, immune system problems, cancer and cardiovascular disease. With that in mind, load up your plate with foods high in lutein -- carrots,... (4)


Learn more: (4)
http://www.naturalnews.com/carotenoids.html#ixzz29OyyfRpz


Read more: (1)
http://www.livestrong.com/article/523617-does-lemon-water-contain-antioxidants/#ixzz29OnfbSjj

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