Blacks are 50 percent more likely to develop a stroke and Black men are 70 percent more likely to die from a stroke, but new research suggests that a change to your diet may decrease your risk. People who get their dietary fat from olive oil rather than steak may help reduce their risk of suffering a stroke, a preliminary study suggests.
The study, of more than 100,000 health professionals, found that those who favored vegetable oils and other plant foods as their source of fat generally had a lower risk of stroke over the years.
Overall, the 20% of people with the highest intake of vegetable fats had a 12% lower risk of suffering a stroke over 27 years, compared to people with the lowest intake of those fats.
On the other end of the spectrum were people who got much of their dietary fat from meat. The 20% with the highest intake of those fats were 16% more likely to suffer a stroke, compared to the 20% with the lowest intake.
Many studies have looked at the relationship between dietary fat and stroke risk. This one focused on the food sources of that fat, lead researcher Fenglei Wang, a postdoctoral fellow at the Harvard School of Public Health in Boston says.
And the findings, he notes, favor replacing beef fat with vegetable oils like olive, soybean or corn.
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She said overall diet quality is the key, and not any single nutrient.
“People who eat a lot of vegetable fats are probably doing many other things, too — like eating fruits and vegetables, exercising and not smoking,” Lichtenstein says.
The study did account for many of those variables to arrive at its figures regarding dietary fat. And, Lichtenstein says, the negative health effects of saturated fat likely account for some of the higher stroke risk among red meat fans. (In contrast, people who favored plant-based fats probably ate little saturated fat.)
But the point remains that people should focus on their whole diet. “I think we still have a
hangover from the 1990s,” she notes, referring to the period when “low-fat” became the rage.
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In its advice, the American Heart Association (AHA) encourages people to eat plenty of whole and “minimally processed” foods, and cut heavily processed foods like chips, crackers and other snack favorites.
That helps limit less-than-healthy fats, as well as sugar and sodium, Lichtenstein shares. Just as important, a diet high in foods like fruits, vegetables, high-fiber grains and fish will supply the nutrients people need to support their cardiovascular health.
As for fat, the AHA recommends focusing on the source: Use liquid vegetable oils, like olive, canola and safflower oils, rather than butter. And go for foods like nuts, nut butters, seeds and avocado.
Meat is not off the table, according to Lichtenstein. But choose lean cuts, avoid processed meats, and replace some meat servings with fatty fish — which is high in the omega-3 fatty acids that are linked to reduced risks of heart disease and stroke.
For the study, Wang’s team used data from two long-running studies of U.S. health care professionals, involving more than 117,000 participants in all. At the outset, in the 1980s, and then every four years, they completed detailed diet questionnaires.
Over 27 years, nearly 6,200 participants had a stroke. That risk dipped as intake of plant-based fats increased. In contrast, the risk rose in tandem with the consumption of fat from meat.
For each daily serving of red meat, the risk of stroke climbed 8%, and for each serving of processed meat, it rose by 12%.
That, Wang says, was after the researchers accounted for factors such as calorie intake, exercise habits, smoking and drinking, and conditions such as diabetes and high blood pressure.
People switching to a more plant-rich diet do need some savvy. If you’re buying packaged meat “alternatives,” for example, check the label for things like sodium and sugar content, Lichtenstein notes.
In general, she concludes, the less processed the food is, the better.
When practicing a healthy diet, remember balance is key. You can still enjoy the foods you love as long as you think about portion control and eat in moderation.
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