Topic of the Month
28 October 2019
19 March 2014
A new data review suggests that while higher blood levels of omega-3 fatty acids may be linked with a reduced coronary disease risk, the overall evidence is insufficient to encourage high consumption of omega-3 fatty acids for cardiovascular health. Experts commented that the new data analysis should not change the current recommendation of diets high in polyunsaturated fats.
The systematic review and meta-analysis included data from 49 long-term prospective observational studies and 27 randomized controlled trials investigating a potential link between intakes and/or blood concentrations of fatty acids and the risk of developing heart diseases (1). The analysis showed statistically non-significant associations between omega-3 and omega-6 fatty acid intakes or levels and heart diseases in the observa- tional studies and the randomized controlled trials. However, some evidence was found that increased blood levels of eicosapentaenoic acid (EPA) and docosahexaenoic acids (DHA) as well as arachidonic acid may each be associated with lower coronary heart disease risk.
The researchers concluded that current evidence does not clearly support guidelines that encourage high consumption of polyunsaturated fatty acids and low consumption of total saturated fats for heart health. In contrast, experts stated the findings of a 25% decreased risk of developing coronary disease linked with increased blood concentrations of EPA and DHA would significantly support increased consumption of the omega-3 fatty acids via supplements or as part of a healthy diet and lifestyle including regular exercise. There are thousands of studies and decades of recommendations from nutritional, medical and governmental organizations supporting the important heart health benefits associated with diets high in polyunsaturated fats, low in saturated fats, and avoidance of trans fats, the expert added. It is no surprise that some intervention studies did not show significant effects as they can be subtle and take a long time to manifest. Thus, the new data analysis should not change any advice to consumers.
28 October 2019
5 April 2013
According to a new review, data from dietary intake surveys indicate that vitamin inadequacy is widespread among healthy, elderly people, even those in affluent Western countries.
18 November 2013
A new US study reduces concern that vitamin D supplementation may be associated with an increased risk of developing kidney stones.