Many dermatologists often advise patients to eat less sweet foods and more fruits and vegetables when they visit acne patients. Patients may wonder why they should eat less sweet foods. Today, I will tell you the reasons for this. First of all, I will show you 2 people who do not have acne, according to scientific reports: the inhabitants of Kitavan Island in Papua New Guinea and nomadic hunters in Paraguay do not have acne, and their food is mainly fruits, fish, prey and potatoes, rather than cereals and refined sugar. This suggests that those high-sugar carbohydrates that increase blood sugar levels (doughnuts, fritters, cookies, sugar, cakes, bread, French fries) can produce a range of altered hormone levels that can cause acne. Elevated blood sugar leads to increased insulin production, which affects other hormones and causes the skin to produce excess oil. Therefore, eating more vegetables and fruits and fewer high-sugar carbohydrates provides a preventive approach for acne sufferers.