23.07.2021 Nutrition

5:2 diet holds hope for type 2 diabetics

World-first study shows benefits of 5:2 diet for people with diabetes

Intermittent fasting has been shown to be just as beneficial as ongoing calorie restriction for people with type 2 diabetes.

A world- first study by University of South Australia researchers showed patients were just as likely to lose weight and control their blood glucose levels by following a ‘5:2’ diet – that is, fasting for two days a week while eating normally for the remaining five days.

The finding could be a solution for diabetics who find it difficult to stick to a diet seven days a week.

Researchers undertook a year-long clinical trial of 137 people with type 2 diabetes, half of whom followed a 5:2 diet and the others an ongoing restricted diet, consuming between 1200 and 1500 calories a day.

The study is the first long-term clinical trial comparing the different diets of people with type 2 diabetes.

Fasting on two non-consecutive days, consuming between 500-600 calories, and then eating normally for five other days each week not only resulted in weight loss but also improved blood glucose control.

While fasting is safe for people with diet-controlled type 2 diabetes, for those using insulin and other oral medications likely to cause hypoglycaemia, blood glucose levels need to be monitored and medication doses changed accordingly, the study authors caution.

UniSA Professor of Nutrition Peter Clifton, said healthcare costs relating to diabetes were increasing, costing the world around US$673 billion each year and $14.6 billion per year in Australia alone.

“It is the 21 century’s health epidemic and the biggest challenge confronting Australia’s health system,” said Professor Clifton.

“Conventional weight loss diets with daily energy restrictions are difficult for people to adhere to so we must look for alternative solutions.”