Milla Clark, 51, from the American city of Fayetteville, Tennessee, has lost a massive 42st 5lbs, The Sun reported.

“By the time she left high school and married her late husband, Elroy, she already weighed over 25st.

After giving birth to her first child, Mila was close to 36st and was told that it was too dangerous to try to conceive any more babies,” the source noted.

A doctor wanted to operate on her to remove her lymphedema but she needed to lose weight to reduce the dangers. She lost 7st on her own and once she got down to 14st, she then had both knees replaced. In three years, she lost 11st.