Drink coffee
Coffee appears to be a boon to brain health, according to early research. “The brain benefits from coffee come mainly from caffeine, which stimulates the central nervous system,” says Palinski-Wade. “In moderate amounts, caffeine can enhance focus and concentration. Caffeine may also boost short-term memory.” Plus, antioxidants in coffee may help protect brain cells, she says. Just don’t overdo the java: “Excessive levels of caffeine can suppress the release of serotonin in the brain” over time, which messes with sleep, another important part of brain health, warns Palinski-Wade. “Aim to keep your overall caffeine intake to less than 400 mg [about four cups] per day,” Palinski-Wade says.