'We’re Taking It Day By Day!' 'Teen Mom 2' Star Leah Messer Reveals A MAJOR Health Update For Daughter Ali

Over the years, Teen Mom 2 stars Leah Messer and Corey Simms have been dealing with their daughter, Ali's health crisis in front of MTV audiences. But before the newest season airs, the mother revealed a MAJOR health update!

"She’s going great," Leah said in an interview to OKMagazine.com exclusively.

"She has Muscular Dystrophy and she goes to the doctor every 4-6 months," she added of her 7-year-old daughter.

The mother-of-three continued, "We’re taking it day by day."

Since their 16 & Pregnant days, Ali's health ups and downs have been a major point in Leah and Corey's storyline.

The newest season of Teen Mom 2 airs Monday, January 2nd, 2017 only on MTV!