Nearly half of patients have reversed type 2 diabetes in a "watershed" trial, say doctors in Newcastle and Glasgow.
People spent up to five months on a low-calorie diet of soups and shakes to trigger massive weight loss.
Isobel Murray, 65, who had weighed 15 stone, lost over four stone (25kg) and no longer needs diabetes pills. She says: "I've got my life back."
The charity Diabetes UK says the trial is a landmark and has the potential to help millions of patients.
Isobel, from Largs in North Ayrshire, was one of 298 people on the trial.
Her blood sugar levels were too high, and every time she went to the doctors they increased her medication.
So, she went on to the all-liquid diet for 17 weeks - giving up cooking and shopping. She even ate apart from her husband, Jim.
'I beat type 2 diabetes with 200-calorie drinks' - BBC News