Some participants did report that they found the diet “incredibly challenging”.
Diabetes UK deputy head of care, Douglas Twenefour, said: “If you’re thinking about trying a low-calorie diet, it’s really important you speak to your GP and get referred to a dietitian.
“It’s also important to bear in mind that if you’re treating your type 2 diabetes with certain medications, such as insulin or sulphonylurea, a low-calorie diet can make hypos more likely.
“So you’ll need support to make changes to your medications and check your blood sugar levels more often.”