What Really Happens To Your Body When You Turn 40

As women age, estrogen levels dip and testosterone levels rise, which can lead to hair growth on the face, chin, knuckles, and toes. “The worst is when you walk out the door feeling like you’re looking good and then you look in the rearview mirror, and you see you’ve got a full-on beard,” says Jackie Morgan MacDougall, founder and CEO of Forty Thrive, a community for women over 40.