Shang Y, Zhou H, Hu M, Feng H. Effect of Diet on Insulin Resistance in Polycystic Ovary Syndrome.
J Clin Endocrinol Metab. 2020 Oct 1;105(10):dgaa425. https://doi.org/10.1210/clinem/dgaa425 PMID: 32621748

Overall, our findings suggest that diet is an effective, acceptable and safe intervention for relieving IR, and professional dietary advice should be offered to all PCOS patients. Based on this review, our results suggest that diet benefits IR and weight management in women with PCOS. The DASH diet and calorie-restricted diets might be the optimal choices for reducing IR and improving weight management. Additionally, the effects were associated with the course of treatment.

Overall, diet is an effective, acceptable and safe intervention, providing options for patients who cannot tolerate the gastrointestinal side effects induced by metformin. However, due to the limited number of studies and the small sample size included, the results should be interpreted with caution.