5 Health Benefits of Peanut Butter When eaten in moderation, peanut butter provides several essential vitamins and minerals and has five major health benefits. 1. Weight Loss - Eating peanuts and other nuts can help people maintain their weight and reduces a person's risk of being overweight. European Journal of Nutrition 2. Boosting Heart Health - Including peanuts or peanut butter into your diet for 6 months could benefit the heart and control weight for people with diabetes. US National Library of Medicine 3. Bodybuilding - Peanut butter is a source of protein, which is essential for building and repairing muscles. Medical News Today 4. Managing Blood Sugar Levels - Peanut butter is a source of magnesium, which is an essential nutrient for people with diabetes. Natural Medicine Journal 5. Reducing the Risk of Breast Disease - Eating peanut butter and nuts may result in a lower risk of developing benign breast disease, which increases the risk of breast cancer. Breast Cancer Research and Treatment