Actress and Tv personality ROSIE O'DONNELL lost 40 pounds (18.1 kilograms) thanks to vertical gastric sleeve surgery.

The A League of Their Own star told guests at the American Heart Surgery Association's Go Red event in Detroit, Michigan on Friday (14Feb14) that she went under the knife last summer (Jul13) and had her stomach reduced by 25 per cent.

She said, "I did it to save my life."

O'Donnell suffered a heart attack in 2012 and her doctor urged her to lose weight and adopt a healthier lifestyle.

After the operation, she reduced her intake of red meat, carbohydrates and sugar and began taking daily walks in an attempt to lose 40 pounds and bring her weight down to below 200 pounds (90.7 kilograms) in a year.

She now weighs in at 190 pounds (86.1 kilograms).