Per AARP there are ways to better your brain.
Physical activity is one of the best tools against cognitive impairment and dementia. You should get 150 minutes a week of purposeful activity. Walking briskly, playing tennis, riding your bike, swimming laps, lifting weights, and the like.
Doing things in groups where there’s a friend or family member learning new activities such as painting, learning a new language or other new pursuits.
Manage your blood pressure.
Eating Mediterranean foods that involves lots of vegetables, fish, nuts and olive oil may help keep your brain in shape. Cutting back on red meat too.