However, “using the glycaemic index to decide whether foods or combinations of foods are healthy can be misleading”, notes the NHS.

The health body explains: “Foods with a high GI are not necessarily unhealthy and not all foods with a low GI are healthy.

“For example, watermelon and parsnips are high GI foods, while chocolate cake has a lower GI value.”

It adds: “If you only eat foods with a low GI, your diet may be unbalanced and high in fat.”

Source: | This article first appeared on Express.co.uk

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