A 2021 study in Stroke followed more than 70,000 people in Japan for more than 13 years, looking at their diet and incidence of stroke, ischemic heart disease, and cardiovascular disease. The people who incorporated more peanuts in their diet had a lower risk for stroke, ischemic stroke, and cardiovascular disease. Ischemic strokes occur when blood is blocked from flowing into the brain and are the most common type of stroke.
Eating peanuts can also improve other aspects of your health. A 2022 study and meta-analysis in Frontiers in Nutrition found that regular consumption of roasted peanuts can reduce triglycerides and improve cholesterol ratios among healthy people. According to a 2019 article in Antioxidants, a diet including peanuts and other tree nuts can reduce your risk of some cancers of the lung, stomach, throat, colon, and pancreas. Consuming more peanuts is also associated with improved cognitive health and a lower incidence of depression in older adults.