High-glycemic foods are studied in acne research because they may influence biological processes that contribute to acne development in some people. While diet is not the sole cause of acne, research suggests that eating patterns with a high glycemic load may worsen acne for certain individuals.
What are high-glycemic foods?
High-glycemic foods are digested and absorbed quickly, causing a rapid rise in blood sugar. Examples include:
- Sugary drinks
- Candy and desserts
- White bread
- White rice
- Many refined breakfast cereals
- Pastries and other foods made with refined flour
Why researchers are interested
Scientists are investigating whether these foods affect hormones and skin function in ways that promote acne. Proposed mechanisms include:
- Higher insulin levels: Rapid increases in blood sugar stimulate the release of insulin.
- Increased hormone activity: Higher insulin levels can increase the activity of hormones such as insulin-like growth factor 1 (IGF-1), which may encourage skin cells to grow more quickly and increase oil (sebum) production.
- More clogged pores: Increased oil production and faster turnover of skin cells can contribute to blocked hair follicles, an early step in acne formation.
- Inflammation: Some evidence suggests that high-glycemic dietary patterns may promote inflammatory processes that can worsen acne.
What studies have found
Research has shown that:
- Some people who follow a lower-glycemic eating pattern experience modest improvements in acne severity.
- Not everyone responds the same way, and some people notice little or no change.
- The evidence suggests an association rather than proving that high-glycemic foods directly cause acne.
Because acne is influenced by many factors—including genetics, hormones, skin bacteria, and inflammation—diet is considered just one potential contributor.
Practical implications
For people who suspect diet affects their skin, it may be reasonable to:
- Choose whole grains more often than refined grains.
- Limit sugar-sweetened beverages and highly processed snacks.
- Eat balanced meals that include protein, healthy fats, and fiber to help moderate blood sugar changes.
These dietary changes may support overall health and could help improve acne for some individuals, but they should not replace proven acne treatments when those are needed.
The bottom line
High-glycemic foods are studied because they may affect hormones, oil production, and inflammation in ways that contribute to acne. Current evidence suggests that a lower-glycemic eating pattern may benefit some people with acne, but responses vary, and diet is generally most effective when considered as one part of a comprehensive acne management plan.
