Olive oil
A 2011 study found that people ages 65 or older who regularly used olive oil (for both cooking and as a dressing) were 41 percent less likely to have a stroke compared to those who never use olive oil in their diet. Use a little olive oil instead of butter or drizzle some over pasta, salad, or veggies to take advantage of its high mono- and polyunsaturated fats, Madden says. “And although it’s a healthier option, remember to use these oils sparingly, as all fats still contain the same number of calories.”