IGF1 and acne: Interestingly, patients with elevated IGF-1 levels were more likely to have acne on the chest than on the face (61.9% vs. 34.4%, p = 0.026), and reported a significantly higher consumption of dairy products such as butter (p = 0.024), cream cheese (p = 0.025), and cheese (p = 0.024) compared to acne patients with normal IGF-1 levels.