“Eating greasy foods causes acne.”

The idea that reaching for a plate of fries or a slice of pizza will inevitably lead to a breakout is a long-standing belief, likely stemming from a visual correlation. It’s easy to connect the oil on greasy food with the oily appearance of acne-prone skin, leading to the intuitive, yet incorrect, conclusion that one causes the other. This misconception has been passed down through generations, often as a well-meaning but misguided dietary warning for adolescents.

However, scientific research has consistently shown no direct link between eating greasy foods and the development of acne. The primary drivers of acne are complex and internal, involving hormonal fluctuations that stimulate excess sebum (oil) production in the skin, the presence of certain bacteria (P. acnes), inflammation, and genetics. While some studies suggest that high glycemic index foods (like refined sugars and white bread) and certain dairy products might exacerbate acne for some individuals, the grease content of food itself is not the culprit.

The persistence of this myth can be attributed to several factors. For one, people often look for simple explanations for complex problems, and linking food to skin issues feels straightforward. Additionally, the general feeling of being "unhealthy" after consuming highly processed or fried foods might subconsciously be connected to perceived skin issues. It's also possible that individuals who already have acne might notice their skin appears oilier after eating certain foods, mistaking this temporary surface oil for a direct cause of new blemishes rather than a coincidental observation.