PURPOSE: Obesity is a systemic condition that is increasingly common. Obesity negatively affects sexual function and menstrual regularity. Therefore, losing excess weight is important for women's sexual and menstrual health. METHODS: The change in body mass index (BMI) and and excess weight loss (EWL) of sexually active female patients who underwent laparoscopic sleeve gastrectomy (LSG) were evaluated by a general surgeon. The preoperative and postoperative periods were compared by a gynecologist using the survey method menstrual patterns, dysmenorrhea complaints, if any, and sexual function with the Female Sexual Function Scale (FSFI). RESULTS: The study included 55 patients with a mean ± standard deviation BMI on the day of the operation of 45.32 ± 5.82 kg/m2. In the first postoperative year, the mean BMI significantly reduced to 27.88 ± 1.99 (p <
0.001). The mean percentage of EWL at the end of 1 year was 73.09 ± 19.74 after LSG. The median (range) preoperative FSFI score of the patients was 26.30 (22.70-27.70). One year after LSG, the median FSFI score significantly improved to 34.50 (30.20-35.30) (p <
0.001). Compared to the period before surgery, the frequency of sexual intercourse increased from two-to-three times a week (p <
0.001). CONCLUSION: Women's sexual desires are a fundamental human right and contribute to female well-being. Thus, it is important to treat sexual dysfunction. The results of the present study demonstrate a significant improvement in sexual dysfunctions after LSG. LSG was an effective procedure that may be recommended to obese women with sexual dysfunction and menstrual problems.