It was first in the early 80's when researches realized a correlation of increased omega 3 intake and a reduced risk for cardiovascular diseases: Eskimos showed a surprisingly low rate of heart diseases although they had a very fat-rich diet through a high consumption of fatty cold water fish.
Meanwhile, numerous studies proved the beneficial effects of omega 3 to prevent cardiovascular diseases and improve heart health. Eating cold water fish might benefit especially those with a high risk for ischemic heart disease (IHD).
Research has shown that omega 3 can help to improve arterial elasticity and that it plays an important role in improving systolic pressure and vascular resistance - both are important factors in improving heart health. Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) - 2 forms of omega 3 fatty acids - proved especially effective in preventing cardiovascular diseases
A study conducted on 38 middle-aged men and women with elevated cholesterol consumed an EPA and DHA supplement, or a placebo during a 7-week period.
Systemic arterial compliance rose 36% in the EPA group and 27% in the DHA group, while the placebo group didn't show any change. Also, both omega-3 supplement groups showed a significant decline in plasma triglyceride concentrations.
Further, omega 3 fatty acids may also act as an anticoagulant to prevent blood from clotting. Several other studies also found that these fatty acids may help lower high blood pressure.
