a woman performing a breast cancer self exam
Breast cancer is most common in women older than 50, but screenings in younger women can help with early detection.
  • Peloton instructor Leanne Hainsby said she was diagnosed with breast cancer at age 35.
  • She wrote on Instagram that she noticed a lump in her breast, but a doctor initially said not to worry.
  • Hainsby said she was diagnosed after multiple tests, and completed weeks of chemo while teaching Peloton classes. 

Peloton instructor Leanne Hainsby, 35, said that she has been privately battling breast cancer for the past six months while continuing to lead classes.