25 March 2015
According to a new US study taking omega-3 fatty acids seems to lower inflammation and guard against further declines in heart function among recent heart attack patients.
In the randomized controlled trial, 374 patients recovering from a heart attack and receiving standard treatment took either four grams of omega-3 fatty acids or a placebo daily (1). Blood work and cardiac imaging were analyzed at two to four weeks post-heart attack and again at six months. By using cardiac magnetic resonance imaging, researchers were able to look at changes in patients’ hearts and see the disease process before and after treatment. The study results showed that patients taking the omega-3 fatty acids were 39% less likely to show a deterioration of heart function as compared to patients taking a placebo. In addition, key markers of systemic inflammation, which were also more likely to be improved in those patients taking the fish oil. Patients who had a 5% increase in the amount of omega-3 fatty acid in their blood seemed to have the best chance of improving heart function (a 10% improvement in left ventricular remodeling).
The researchers commented that omega-3 fatty acids may have anti-inflammatory effects and also promote better cardiac healing. The intake of higher-dose omega-3 fatty acids was not found to be associated with any safety issues. The scientists said that it is unlikely patients could get the amount of omega-3 fatty acids from diet alone: the daily 4 gram dose is roughly equivalent to someone eating a large, 8-ounce serving of salmon every day for six months. The American Heart Association recommends that people eat fish rich in omega-3 fatty acids at least twice a week because of its potential heart benefits. However, most North Americans do not follow this advice, while Japanese populations with higher levels of omega-3 and an otherwise similar risk profile to North Americans have lower risks of heart disease and sudden cardiac death.
7 January 2013
Low plasma concentrations of lutein and zeaxanthin are associated with an increased risk of atrial fibrillation in the elderly, says a new study from Finland.
4 October 2013
New US research reports that only about 54% of US children under the age of five regularly consume fatty fish providing intakes of docosahexaenoic acid (DHA), a polyunsaturated fatty acid important for cognitive development.
31 July 2013
Decreasing fruit and vegetable intakes have triggered a comeback of scurvy and rickets in the UK due to insufficient supplies of vitamin C and D.
