There is some evidence to suggest that certain foods may contribute to acne. High-glycemic foods, such as refined sugars and breads, can cause a rapid increase in blood sugar, which can lead to an increase in oil production and potentially contribute to acne. Similarly, dairy products, particularly milk, may also contribute to acne. This is thought to be due to the hormones and other bioactive molecules found in milk, which can stimulate oil production and inflammation.
Some people may be more sensitive to certain foods and may notice an increase in acne when they consume these foods, while others may not notice any effect.
Overall, while it may be helpful to pay attention to your diet and consider making some changes if you are struggling with acne, it's important to remember that diet is just one of many factors that can contribute to acne. A combination of genetic, hormonal, and environmental factors are usually involved in the development of acne.