Eating Fatty Fish Benefits Younger Women, Study Shows
Modest Amount Could Reduce Risk of Heart Disease, Stroke
Dec. 5, 2011 -- Younger women can cut their risk of heart disease and stroke by occasionally eating fish high in omega-3 fatty acids, such as salmon, Danish researchers report.
“We saw a positive effect on [heart disease and stroke risk] even from relatively modest intake of fish, so this is encouraging to people who might struggle to comply with the recommended levels of daily fish intake,” study researcher Marin Strom, PhD, tells WebMD in an email.
Strom, of Statens Serum Institut in Copenhagen, Denmark, and her colleagues note that most research into omega-3 fatty acids and heart attack and stroke risk has focused on men, and even studies that did include women tended to overlook those of childbearing age.
The Danish researchers took advantage of their country’s large database of health information about pregnant women. Dietary data for about 49,000 women in the Danish National Birth Cohort was linked to information about hospitalization from the Danish National Patients Registry. At the beginning of the study, the women on average were about 30 years old.
The scientists compared the women’s intake of fatty fish, including salmon, mackerel, cod, and herring, with their risk of being hospitalized for heart disease, stroke, or high blood pressure over the next eight years or so. Compared to the women who ate the most fish, those who ate little or none were about 50% more likely be hospitalized for heart disease, stroke, and high blood pressure.
Previous research has shown that people who don’t eat fish are also more likely to have other risk factors for heart disease and stroke, such as smoking or a sedentary lifestyle, Strom and her colleagues write. But even after they accounted for those factors, the association between omega-3 fatty acid intake and heart disease and stroke risk remained significant.
Why Omega-3s Might Lower Risk
Women who can’t stomach fish probably could benefit from taking fish oil supplements containing omega-3 fatty acids, Strom says.
“However,” she says, “fish also contains other important nutrients, such as selenium, and I would rather emphasize the importance of eating fish ... than advise people to take supplements.”