Research we're watching
Image: © radyreese/Getty Images
High cardiovascular fitness during middle age may lower the likelihood of dementia late in life, according to a decades-long study.
For the study, researchers asked 191 middle-aged women to ride an exercise bike until they were exhausted. They then grouped the women according to their peak cardiovascular capacity. Just 40 women met the criteria for high fitness, while 92 were in the medium category, and 59 were in the low category.
Over the following 44 years, the women were tested for dementia six times. Five percent of the highly fit women developed dementia, compared with 25% and 32% respectively, for those in the moderate and low fitness groups. Highly fit women were 88% less likely to develop dementia than even the moderately fit women.
The study, published April 10, 2018, in Neurology, doesn't prove that being highly fit prevents dementia. But the findings add to an ever-growing body of research connecting heart health to brain health.
As a service to our readers, Harvard Health Publishing provides access to our library of archived content. Please note the date of last review on all articles. No content on this site, regardless of date, should ever be used as a substitute for direct medical advice from your doctor or other qualified clinician.