New data from 8,700 women shows how underweight and obesity disrupt cycles—and why hitting a BMI sweet spot of 20 could boost fertility and ovulation. Study: Body mass index and menstrual irregularity ...

Your cycle is not just a date on an app. It’s a moving backdrop that quietly shifts how you think, feel, and show up — from the glow on your skin to the snap in your step to the day everything feels a ...

Editor's Note: We at PS recognize that people of many genders and identities have menstrual cycles. This particular story includes language from experts who generally refer to people with menstrual ...