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Heart-Healthy Habits Good For Your Brain

HealthDay News
by -- Robert Preidt
Updated: Aug 8th 2019

new article illustration

THURSDAY, Aug. 8, 2019 (HealthDay News) -- Want to reduce your risk of dementia? Take care of your heart.

That's the takeaway from a new study that suggests good heart health in middle age could lower your odds for problems with thinking and memory later in life.

The study included nearly 7,900 British adults who did not have heart disease or dementia at age 50. Over an average 25-year followup, 347 cases of dementia were diagnosed among participants. Average age at diagnosis: 75.

After taking other factors into account, researchers linked a higher score at age 50 on seven healthy habits outlined in the American Heart Association's "Life Simple 7" with a lower risk of dementia later in life.

The Life Simple 7 assesses smoking, diet, physical activity, fasting blood sugar, blood cholesterol, blood pressure and body mass index (a measure of body fat based on height and weight).

Dementia rates were 1.3 per 1,000 person years among participants who had high scores on heart healthy habits, compared to 3.2 per 1,000 for low-scorers, according to the study published Aug. 7 in the BMJ.

A better score at age 50 was also associated with higher overall brain and gray matter volumes in MRI scans 20 years later.

Though the study could not prove that heart-healthy living actually caused dementia risk to drop, the researchers said their findings support public policies to improve heart health in middle age. They pointed out that dementia is a progressive disease that can start 15 to 20 years before symptoms appear.

"Our findings suggest that the Life's Simple 7, which comprises the cardiovascular health score, at age 50 may shape the risk of dementia in a synergistic manner," the study team wrote. "Cardiovascular risk factors are modifiable, making them strategically important prevention targets."

The lead author is Severine Sabia of the French National Institute of Health in Paris and University College London.

More information

The Alzheimer's Association has more on brain health.