Scientists are uncovering clues about why polycystic ovary syndrome (PCOS) often affects multiple generations in families. A new study points to "epigenetic memory"—changes in gene activity passed down without altering the DNA itself—as a possible culprit. This could explain the stubborn hereditary pattern of PCOS and open doors for better treatments.

Editor’s Note: PCOS is a frustrating, poorly understood condition that messes with fertility, hormones, and metabolism. If epigenetics plays a role, it’s a big deal—not just for explaining family ties, but for eventually developing targeted therapies. For millions of women, this research could be a step toward answers that feel personal, not just clinical.