Combined Oral Contraceptive Pill and Resistance Starch

This study tests whether adding a dietary fiber supplement (resistant starch) to the birth control pill improves hormonal and metabolic health in women with polycystic ovary syndrome (PCOS). **You may be eligible if:** - You are a woman between 18 and 40 years old - You have been diagnosed with PCOS (with irregular periods, high androgen levels, or polycystic ovaries on ultrasound) - Your BMI is between 25 and 48 - You are willing to avoid pregnancy for the entire study duration - You are not currently taking any medication that affects weight or metabolism **You may NOT be eligible if:** - You have another reason for irregular periods (e.g., thyroid issues, elevated prolactin, early menopause) - You have had bariatric (weight loss) surgery - You have type 1 or type 2 diabetes - You have liver or kidney disease - You have a history of blood clots, stroke, or serious heart disease - You have a history of breast, cervical, or endometrial cancer - You currently take probiotics, laxatives, or have recently used antibiotics (within 3 months) - You eat more than 20 grams of fiber per day - You have Crohn's disease or ulcerative colitis Talk to your doctor to see if this trial is right for you.