Carotenoids decrease risk of macular degeneration

One of the most concerning age-related disease is referred to as age-related macular degeneration. It is the leading cause of blindness in the elderly. This leads to the degeneration of an area in our eye called the macula, which is responsible for our central vision. When they look at someone, they are not able to see their face, but are able to see the area around their face.

Researchers have identified that the cause of this disease is oxidative stress. Several studies have been done that show that supplementation with a host of antioxidants including two carotenoids called lutein and zeaxanthin significantly decreases your risk of developing age-related macular degeneration.

Source: Neelam K, Hogg Re, et al. Carotenoids and co-antioxidants in age-related maculopathy. Ophthalmic Epidemiology. 2008 Nov-Dec;15(6):389-401.

Source: Dr. Strand Health Nuggets (newsletter@Bionutrition.org)

Sunlight exposure along with low antioxidant levels increases the risk of macular degeneration

A recent study suggests that protecting the eyes from sunlight exposure (using hats or protective sunglasses) and consuming high levels of dietary antioxidants may significantly reduce the risk of developing age-related macular degeneration. The researchers looked at lifetime sunlight exposure and measured blood antioxidant levels of vitamin C, vitamin E, zeaxanthin, and zinc. They evaluated 4,400 older people and found that individuals with the lowest antioxidant levels and greatest sunlight exposure significantly increased the risk of macular degeneration.

Source: Dr. Strand Health Nuggets (newsletter@Bionutrition.org)

Smoking Doubles Risk Of Degenerative Eye Condition

ScienceDaily (Apr. 15, 2005) — Smoking doubles the risk of the progressive and irreversible eye condition, macular degeneration, and may account for almost 30,000 cases in the UK, suggests research in the British Journal of Ophthalmology.

The risk of macular degeneration increases with age and is the most common cause of blindness in the UK, affecting around 200,000 elderly people.

The findings are based on a representative sample of over 4,000 people, aged 75 and older, from 49 general practices across Britain.

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The participants all underwent a series of detailed eye tests and were asked about their smoking habits, and if they had given up, how long ago. After taking into account other risk factors, such as alcohol consumption and cardiovascular disease, the results showed that current smokers were twice as likely to be visually impaired as non-smokers.

Those who had kicked the habit more than 20 years previously were not at risk.

Based on the numbers of people in the UK who are blind or who are partially sighted as a result of macular degeneration, the authors calculated that smoking was likely to have caused up to 30,000 cases.

"An increased risk of [age related macular degeneration], which is the most commonly occurring cause of blindness in the United Kingdom, is yet another reason for people to stop smoking and governments to develop public health campaigns against this hazard," conclude the authors.

Adapted from materials provided by British Medical Journal.

British Medical Journal (2005, April 15). Smoking Doubles Risk Of Degenerative Eye Condition. ScienceDaily. Retrieved January 8, 2008, from http://www.sciencedaily.com­ /releases/2005/04/050415113414.htm