People with a family history of dementia who followed at least three of these healthy behaviors reduced their risk for dementia by 35 percent, compared with those who adhered to fewer healthy behaviors. Among all participants (not just those with dementia in their family history), those who followed all six healthy behaviors cut their dementia risk roughly in half (by 51 percent), compared with people who led a less healthy lifestyle.
Dementia affects mostly older adults, but it is not considered a normal part of aging. Symptoms of dementia, which vary from person to person, may include problems with memory (beyond misplaced car keys or forgetting a name), trouble concentrating, becoming confused, getting lost in familiar surroundings and mood changes.
In 2020, about 5.8 million Americans had Alzheimer’s, the most common type of dementia, with the Centers for Disease Control and Prevention predicting that number would reach 14 million by 2060. As the American Heart Association president, a neurologist, noted at the conference:
“We’ve known for a long time that increasing physical activity and decreasing the amount of time spent in sedentary behaviors can improve one’s heart health. Now we’re seeing that those same activities can also decrease one’s chance of cognitive decline and dementia, and improve brain health.”