
As the name states, antioxidants are compounds that prevent oxygen damage (oxidation), and fight the action of free radicals. Free radicals are unstable molecules missing an electron, and they damage other molecules by seeking out a full complement of electrons.
By taking electrons from other molecules they can damage cells. The damage they cause can accumulate, partly contributing to the ageing process and the development of some degenerative diseases.
Free radicals are formed within our bodies as a natural by-product of metabolism, and also from external sources such as ultraviolet radiation, pollution and cigarette smoke.
Antioxidants such as vitamin C, vitamin E and betacarotene may play a preventative role in ageing and the development of disease by neutralising free radicals.
To help better understand the action of free radicals and antioxidants, think about how a sliced apple turns brown. The inner flesh is exposed to air, allowing oxygen to create cell damage. But if you drizzle some fresh lemon juice over the sliced apple, the browning does not occur. The vitamin C (a potent antioxidant) in the lemon inhibits oxidation and helps prevent cellular damage.
According to a recent study published in the Journal of Nutrition, antioxidants may significantly reduce the risk of developing lower urinary tract symptoms (LUTS) in men.
The study found that men with the highest average intake of the antioxidants lycopene, betacarotene or vitamin A had a 40 to 50 percent reduction in the chance of developing LUTS compared with men with the lowest average intakes.
The researchers suggested that antioxidants could influence LUTS by their abilities to prevent cellular damage by inhibiting oxidation, and the results support recommendations for increased fruit and vegetable consumption.
LUTS are common in older men and are associated with decreased quality of life. The symptoms of LUTS include frequent and urgent urination, and a weak urinary stream. The causes of LUTS are not fully understood, but some possible causes include inflammation and oxidative damage.
There are many different types of antioxidants, and the best approach may be to include a broad range in your diet. Following are some guidelines to help boost your antioxidant intake.
References available on request