Study finds two servings of fish per week can help prevent recurrent heart disease 研究發現每週兩份魚可以幫助預防復發性心髒病

News Release 8-Mar-2021

Editor’s note: Eating some fish may not pose much of any health risk. However, most powerful dietary practice to prevent cardiovascular disease is eating a plant-based diet. Animal-fresh-derived foods tend to promote growth which explains why eating meat can increase cancer risk.

Also not all types of fish render the same health benefits. Farm raised fish may carry pesticides and hormones and other pollutants like heavy metals and toxic chemicals, which may actually cause more harm than good.

編者註：吃一些魚可能不會對健康構成太大威脅。 但是，預防心血管疾病的最有效的飲食習慣是吃植物性飲食。 動物新鮮食品往往會促進生長，這解釋了為什麼吃肉會增加患癌症的風險。

同樣，並非所有類型的魚都具有相同的健康益處。 養殖魚可能攜帶農藥，激素和其他污染物，例如重金屬和有毒化學物質，實際上可能造成弊大於利。

McMaster University

Research News

Hamilton, ON (March 8, 2021) – An analysis of several large studies involving participants from more than 60 countries, spearheaded by researchers from McMaster University, has found that eating oily fish regularly can help prevent cardiovascular disease (CVD) in high-risk individuals, such as those who already have heart disease or stroke.

The critical ingredient is omega-3 fatty acids, which researchers found was associated with a lower risk of major CVD events such as heart attacks and strokes by about a sixth in high-risk people who ate two servings of fish rich in omega-3 each week.

“There is a significant protective benefit of fish consumption in people with cardiovascular disease,” said lead co-author Andrew Mente, associate professor of research methods, evidence, and impact at McMaster and a principal investigator at the Population Health Research Institute.

No benefit was observed with consumption of fish in those without heart disease or stroke.

“This study has important implications for guidelines on fish intake globally. It indicates that increasing fish consumption and particularly oily fish in vascular patients may produce a modest cardiovascular benefit.”

Mente said people at low risk for cardiovascular disease can still enjoy modest protection from CVD by eating fish rich in omega-3, but the health benefits were less pronounced than those high-risk individuals.

The study was published in JAMA Internal Medicine on March 8.

The findings were based on data from nearly 192,000 people in four studies, including about 52,000 with CVD, and is the only study conducted on all five continents. Previous studies focused mainly on North America, Europe, China and Japan, with little information from other regions.

“This is by far the most diverse study of fish intake and health outcomes in the world and the only one with sufficient numbers with representation from high, middle and low income countries from all inhabited continents of the world,” said study co-lead Dr. Salim Yusuf, professor of medicine at the Michael G. DeGroote School of Medicine and executive director of the PHRI.

This analysis is based in data from several studies conducted by the PHRI over the last 25 years. These studies were funded by the Canadian Institutes for Health Research, several different pharmaceutical companies, charities, the Population Health Research Institute and the Hamilton Health Sciences Research Institute.

###

Editors:

For information, please contact:

Veronica McGuire
Media Relations
Faculty of Health Sciences
McMaster University
289-776-6952
[email protected]