According to a study carried out in Barcelona and published in JAMA Ophthalmology, taking at least two servings a week of oily fish, rich in omega-3 polyunsaturated fatty acids (PUFAs), can help people with type 2 diabetes to reduce the risk of diabetic retinopathy in middle age and old age.

It was found that the participants, in average 55 years of age, had consumed at least 500 mg / day of omega-3 PUFAs with a reduction of 48% of the risk for the onset of diabetic retinopathy than those who had consumed less than 500 mg / day.

Also they were observed higher risk reductions in participants with hypertension, diabetes spanning more than 5 years, and those treated with insulin.

Prolonged consumption of two weekly servings of fatty fish increases the levels of omega-3 in cells and allows to effectively counter the state of inflammaging, the basis of onset and progression of diabetic retinopathy.
Certainly the benefit is dose / dependent: in fact also in cardiovascular studies the effectiveness of PUFA intake based on daily supplements seems to be higher levels to 2000 mg / daily.

The researchers summarize the concept already highlighted by other studies that the idea that regular consumption of oily fish may be useful for delaying the onset or progression of arterial vascular disease in different beds than coronary and cerebrovascular.