EDITORS NOTE: Although this study does not directly relate to hair loss, there is a lot of data suggesting that omega-3 fatty acids have many health benefits and may help reduce the inflammation present in people suffering with hair loss.

Newswise — Increasing intake of the omega-3 fatty acids DHA and EPA, found in popular fish-oil supplements, may protect against blindness resulting from abnormal blood vessel growth in the eye, according to a study published online by the journal Nature Medicine on June 24. The study was done in mice, but a clinical trial at Children’s Hospital Boston will soon begin testing the effects of omega-3 supplementation in premature babies, who are at risk for vision loss.
Abnormal vessel growth is the cause of retinopathy of prematurity, diabetic retinopathy in adults, and “wet” age-related macular degeneration, three leading causes of blindness. Retinopathy, affecting about 4 million diabetic patients and about 40,000 premature infants in the United States, is a two-step disease that begins with a loss of blood vessels in the retina (the nerve tissue at the back of the eye that sends visual signals to the brain). Because of the vessel loss, the retina becomes oxygen-starved and sends out alarm signals that spur new vessel growth. But the new vessels grow abnormally and are malformed, leaky and over-abundant. In the end stage of the disease, the abnormal vessels pull the retina away from its supporting layer, and this retinal detachment ultimately causes blindness.
The researchers, led by Lois Smith, MD, PhD, and Kip Connor, PhD, of Children’s Hospital Boston’s Department of Ophthalmology and Harvard Medical School, and John Paul SanGiovanni, ScD, of the National Eye Institute (NEI), National Institutes of Health, studied retinopathy in a mouse model, feeding the mice diets that emphasized either omega-3 fatty acids (comparable to a Japanese diet) or omega-6 fatty acids (comparable to a Western diet).
Mice on the omega-3 diet, rich in DHA (docosahexaenoic acid) and its precursor EPA (eicosapentaenoic acid), had less initial vessel loss in the retina than the omega-6-fed mice: the area with vessel loss was 40 to 50 percent smaller. As a result, the omega-3 group had a 40 to 50 percent decrease in pathological vessel growth.
- Read more: Can Blindness be Prevented Through Diet?
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