Macular degeneration is a disease in which cells of the central area of retinal atrophy so far as to blind us to read, drive or perform many other daily activities. Michael Belkin and Zohar Habot-Wilner, University of Tel-Aviv, have developed a meta-analysis of 20 studies which show that obesity contributes to such atrophy. As for glaucoma, the authors found that obesity may end up punishing the optic nerve and lead to a gradual loss of vision leading to blindness.
With regard to the falls, Hebrew scholars have failed to establish a clear link between cause and effect, but underline the fact that obese patients show a higher incidence of gout than non-obese people, “having shown that patients with gout an increased risk of cataracts. ” Speaking to British newspaper Daily Mail, “Wilner Habot Belkin and a few months ago claimed that obesity is not only a risk factor for cancer or cardiovascular disease, but also blindness.
Vitamins and antioxidants
Recent studies related macular degeneration with regular intake of vitamins C and E, beta carotene and zinc for its part, researchers from Erasmus Medical Center Rotterdam is served by one of the largest epidemiological studies conducted in the Netherlands, from 1990 to 1993, to investigate whether a diet rich in antioxidants could prevent macular degeneration. Up to 4,170 patients over 55 years were then followed closely for about a decade, identified 560 new cases of disease.
As endorsed in a recent issue of JAMA study leaders, led by Redmer van Leeuwen, there is an inverse relationship between the progression of new cases of macular degeneration and regular intake of vitamins C and E, beta carotene and zinc. “Individuals taking more vitamins than usual were up to 35% less risk of degeneration, while among those who drank less than normal vitamins the risk increased by 20% ‘, experts say.
Experts from Harvard University, coordinated by Kathleen Dorey, thoroughly investigated the relationship of vitamin A with the vision and found that, provided the many carotenoids in the diet, the human retina at will select only two: lutein and zeaxanthin . The concentration of these two molecules in the macula is so high that can be identified with a magnifying glass in the form of pigments. Dorey experienced the effect of regular doses of zeaxanthin in laboratory animals (quail), noting that its role is precisely to protect the retina against macular degeneration.
“Macular degeneration occurs by the irreversible loss of photoreceptors and / or proliferation of damaged blood vessels in retinal space. The affected eye can not only perform such everyday tasks as reading or driving, but will not be able to distinguish in many cases the features of a loved one in its entirety, the patient behaving stress worthwhile. ” The American ophthalmologist remember that more than 17 million Americans at significant risk of developing macular degeneration, since they can kill two million suffer permanent blindness. “We have been diagnosed an average of 500,000 new cases each year.”
Dorey’s team aimed to that zeaxanthin protected both rod photoreceptors and the cone in the retina of quail, and is currently preparing to investigate the therapeutic use of zeaxanthin in human clinical practice.
Dry eye syndrome
Dry eye syndrome may also be related to excessive intake of dietary fat. It is a painful and debilitating disease which particularly affects women and is characterized by a reduction in the quality and quantity of watery eyes. Symptoms emphasizes the development of a rash that, if untreated, can lead to scarring or ulceration of the cornea and vision loss. Researchers from Brigham and Women’s Hospital and Schepens Eye Research Institute (Boston, Massacusetts) reached this conclusion after studying the dietary habits of 37,000 women.
According to the study coordinator, Biljana Miljanovic, “found that a high intake of omega-3 fatty acids, common in oily fish and nuts, is associated with a protective effect for the eyes, whereas a higher proportion of omega 6 present in oil dressing or sauces, may increase the risk of dry eye syndrome. ” The researcher stressed that only discrimination of omega 3 versus omega 6 in the diet reduces the risk of dry eye by almost 70%.