Can a diet app tame PCOS symptoms? new study investigates

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Female participants aged 18 to 45 years. * Diagnosis of polycystic ovary syndrome (PCOS) with an anovulatory phenotype according to the Rotterdam criteria (2003). * Oligo-ovulation or anovulation, defined as menstrual cycle length greater than 35 days or fewer than 8 menstrual periods per year, together with at least one of the following: * Clinical and/or biochemical hyperandrogenism. * Polycystic ovarian morphology on ultrasound, defined as at least 20 follicles measuring 2 to 9 mm in either ovary and/or ovarian volume of at least 10 cm3. * Possession of a smartphone compatible with the study application (Android or iOS). * Ability and willingness to use the mobile application and comply with study procedures. * Provision of written informed consent before any study-specific procedures are performed. Exclusion Criteria: * Pregnancy or breastfeeding at the time of enrollment. * Planning pregnancy during the study period. * Type 1 or type 2 diabetes mellitus. * Other endocrine disorders that may affect reproductive or metabolic function, including Cushing syndrome, congenital adrenal hyperplasia, androgen-secreting tumors, hyperprolactinemia, or uncontrolled thyroid disease. * Severe liver disease, including cirrhosis or liver failure. * Severe renal impairment, defined as estimated glomerular filtration rate less than 30 mL/min/1.73 m2. * Severe cardiovascular disease, including unstable angina, myocardial infarction within the previous 6 months, or stroke within the previous 6 months. * Use within the previous 3 months of medications that may affect body weight, carbohydrate metabolism, androgen status, or reproductive function, including metformin, oral contraceptives, antiandrogens, gonadotropin-releasing hormone agonists or antagonists, clomiphene citrate, glucocorticoids, thiazolidinediones, or weight-loss drugs. * Current or past eating disorders, including anorexia nervosa, bulimia nervosa, or binge eating disorder. * Mental disorders or cognitive conditions that, in the opinion of the investigator, would preclude safe participation or compliance with study procedures. * Participation in another clinical trial within the previous 3 months. * Refusal or inability to provide written informed consent.