Diet and Acne: What We Know from a Dermatologist’s Perspective
For decades, patients have asked whether what they eat affects their acne. While diet is not the single cause of breakouts, modern research shows that certain foods can meaningfully influence inflammation, hormones, and oil production. From a dermatologist’s perspective, diet is now recognized as a helpful—and modifiable—piece of the acne puzzle for our Florida patients.
One of the strongest and most consistent associations is with high–glycemic index foods. Sugary snacks, white breads, sweetened drinks, and refined carbohydrates cause rapid blood sugar spikes, which increase insulin levels and stimulate hormones that boost oil production. Several clinical trials demonstrate that people who switch to a low–glycemic load diet often see fewer breakouts and reduced redness.
Processed foods tend to fall into this same category. Items high in refined carbohydrates, artificial additives, and unhealthy fats can fuel inflammation throughout the body. While not every processed food will cause acne, diets dominated by packaged snacks, fast food, and ultra-processed meals are linked to higher levels of inflammation—one of the core drivers of acne.
Dairy, especially skim milk, also has a well-described association with acne. Milk contains natural hormones and increases IGF-1 levels, both of which can worsen breakouts in acne-prone individuals.
There is growing interest in foods that may support clearer skin. Omega-3 fatty acids, found in salmon, sardines, walnuts, and flaxseed, have anti-inflammatory properties. They may help counteract inflammatory pathways involved in acne. Probiotics, whether through fermented foods or supplements, may also benefit patients by promoting a more balanced gut microbiome. Early studies suggest that improving gut health can lower systemic inflammation and potentially improve acne severity.
Finally, whey protein supplements—commonly used for fitness—have been increasingly linked to acne flares, particularly along the jawline and trunk. Many patients notice improvement once they discontinue whey.
Overall, diet does not replace medical acne treatment, but it can meaningfully enhance it. Prioritizing whole, unprocessed foods; reducing high-glycemic and dairy intake; avoiding whey protein; and incorporating omega-3s and probiotics can support clearer, healthier skin.
Would you like to learn more about how your diet could affect acne? Our Florida-based Skin Wellness Physicians team can provide further advice. Call us at (239) 732-0044 or send us a message to book an appointment in Naples or Marco Island, FL.
