How restricting meals to a window can help manage blood sugar levels

Type 2 diabetes affects 1.2 million Australians and accounts for 85%-90% of all diabetes cases. This chronic condition is characterised by high blood glucose (sugar) levels, which carry serious health risks. Complications include heart disease, kidney failure and vision problems.

Diet is an important way people living with type 2 diabetes manage blood glucose, alongside exercise and medication. But while we know individualised, professional dietary advice improves blood glucose, it can be complex and is not always accessible.

Our new study looked at the impact of time-restricted eating – focusing on when you eat, rather than what or how much – on blood glucose levels.

We found it had similar results to individualised advice from an accredited practising dietitian. But there were added benefits, because it was simple, achievable, easy to stick to – and motivated people to make other positive changes.

Time-restricted eating

Time-restricted eating, also known as the 16:8 diet, became popular for weight loss around 2015. Studies have since shown it is also an effective way for people with type 2 diabetes to manage blood glucose.

Time-restricted eating involves limiting when you eat each day, rather than focusing on what you eat. You restrict eating to a window during daylight hours, for example between 11am and 7pm, and then fast for the remaining hours. This can...

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