Eating too many peanuts or peanut butter will cause or worsen acne breakouts.
Scientific studies have found no conclusive evidence that peanuts cause acne. Acne is primarily caused by hormones, bacteria, and oil production. While high-glycemic foods may correlate with acne in some individuals, peanuts are low-glycemic and nutrient-rich. The myth may persist because peanuts are high in fat, but dietary fat doesn't directly cause acne.