Will Certain Foods Bolster Brain Health After Stroke?
Stroke survivors who eat plenty of leafy greens, fish and other
healthy foods may help preserve their brain function as time goes on, a
preliminary study suggests.
Researchers found the benefits among stroke survivors who most closely followed the principles of the so-called "MIND" diet. It pulls together elements from two eating plans known to improve heart health: the traditional Mediterranean diet and the "DASH" diet, for controlling high blood pressure.
It also makes specific recommendations that are based on research into nutrition and brain health, said senior researcher.
For example, she said, the diet puts more value on vegetables -- especially leafy greens -- than fruit. And when people do eat fruit, the advice is to go heavy on berries, which studies have linked to less cognitive decline.
Cognitive decline refers to problems with memory, judgment and other thinking skills that can crop up as people age. Stroke survivors are at heightened risk of that kind of decline, as well as full-blown dementia.
Their risk of dementia is roughly twice the norm, said a Dr., who directs the stroke center.
Strokes occur when blood flow to the brain is suddenly reduced, the Dr. explained. That can leave people with brain damage that impairs their thinking. Plus, stroke patients often have underlying conditions, like high blood pressure and heart disease, that are linked to a higher dementia risk.
So it's important to find ways to help preserve their brain function, said the Dr.
"This is really a newer area of research," she said. "How can we promote brain health and function as people age?"
For this study, the researcher -- who created the MIND diet -- and her team looked at the relationship between stroke survivors' dietary habits and their odds of mental decline over the next five years.
They tracked 106 survivors, breaking them into three groups based on how well they stuck with MIND-like eating habits. The top one-third were those who most regularly ate foods like leafy greens, berries, nuts, olive oil, fish, whole grains and beans.
In the end, those people had only half the rate of cognitive decline seen in the one-third of survivors whose diets were the least MIND-like.
The study does not prove the MIND diet actually protects stroke survivors' brains, it only shows an association, the Dr. said.
The study tracked people's usual habits; it was not a clinical trial that randomly assigned people to follow the MIND diet or not.
But such trials are underway, the Dr. said. One is focusing on older adults with a family history of dementia. Another, in the design stage, will follow stroke survivors.
Morris said the foods emphasized in the MIND plan may not only be generally healthy, but specifically good for the brain.
In a recent study, the Dr. found that older adults who ate one serving of leafy greens each day showed slower brain aging, compared with those who rarely ate them. It was as if they'd shaved 11 years off their age -- as far as their brain function was concerned, she said.
Leafy greens (such as spinach, kale and collard greens) contain nutrients that appear to support brain function, she explained. They include vitamin K, folate, beta-carotene and lutein.
For now, she said stroke survivors can take heart that it's never too late to eat healthfully.
"We can't establish cause-and-effect from these findings," she said. "But they can show you you're on the right track."
Often the Dr. noted, people believe that once you suffer a stroke, "that's it."
"But the brain has a great capacity for repair," she said: The healthy brain tissue surrounding the stroke-damaged area can try to make "new connections" to compensate.
"So an important message is, you can improve after a stroke," the Dr. said.
Researchers found the benefits among stroke survivors who most closely followed the principles of the so-called "MIND" diet. It pulls together elements from two eating plans known to improve heart health: the traditional Mediterranean diet and the "DASH" diet, for controlling high blood pressure.
It also makes specific recommendations that are based on research into nutrition and brain health, said senior researcher.
For example, she said, the diet puts more value on vegetables -- especially leafy greens -- than fruit. And when people do eat fruit, the advice is to go heavy on berries, which studies have linked to less cognitive decline.
Cognitive decline refers to problems with memory, judgment and other thinking skills that can crop up as people age. Stroke survivors are at heightened risk of that kind of decline, as well as full-blown dementia.
Their risk of dementia is roughly twice the norm, said a Dr., who directs the stroke center.
Strokes occur when blood flow to the brain is suddenly reduced, the Dr. explained. That can leave people with brain damage that impairs their thinking. Plus, stroke patients often have underlying conditions, like high blood pressure and heart disease, that are linked to a higher dementia risk.
So it's important to find ways to help preserve their brain function, said the Dr.
"This is really a newer area of research," she said. "How can we promote brain health and function as people age?"
For this study, the researcher -- who created the MIND diet -- and her team looked at the relationship between stroke survivors' dietary habits and their odds of mental decline over the next five years.
They tracked 106 survivors, breaking them into three groups based on how well they stuck with MIND-like eating habits. The top one-third were those who most regularly ate foods like leafy greens, berries, nuts, olive oil, fish, whole grains and beans.
In the end, those people had only half the rate of cognitive decline seen in the one-third of survivors whose diets were the least MIND-like.
The study does not prove the MIND diet actually protects stroke survivors' brains, it only shows an association, the Dr. said.
The study tracked people's usual habits; it was not a clinical trial that randomly assigned people to follow the MIND diet or not.
But such trials are underway, the Dr. said. One is focusing on older adults with a family history of dementia. Another, in the design stage, will follow stroke survivors.
Morris said the foods emphasized in the MIND plan may not only be generally healthy, but specifically good for the brain.
In a recent study, the Dr. found that older adults who ate one serving of leafy greens each day showed slower brain aging, compared with those who rarely ate them. It was as if they'd shaved 11 years off their age -- as far as their brain function was concerned, she said.
Leafy greens (such as spinach, kale and collard greens) contain nutrients that appear to support brain function, she explained. They include vitamin K, folate, beta-carotene and lutein.
For now, she said stroke survivors can take heart that it's never too late to eat healthfully.
"We can't establish cause-and-effect from these findings," she said. "But they can show you you're on the right track."
Often the Dr. noted, people believe that once you suffer a stroke, "that's it."
"But the brain has a great capacity for repair," she said: The healthy brain tissue surrounding the stroke-damaged area can try to make "new connections" to compensate.
"So an important message is, you can improve after a stroke," the Dr. said.
THIS IS ONLY FOR INFORMATION, ALWAYS CONSULT YOU PHYSICIAN BEFORE
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Labels: berries, brain functions, cognitive decline, controls blood pressure, dark leafy greens, Fish, healthy foods, Mediterranean diet, MIND diet, preserve, stroke, survivors
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