Sugar is often blamed for health problems such as obesity and type 2 diabetes. Dr Madusha Peiris, a specialist in appetite and gut hormones, says the effect of sugar depends on where it comes from and how much is eaten.

Sugar is found naturally in foods like fruit, vegetables, and dairy products. These foods give the body important nutrients, such as vitamins and fibre. Removing them just because they have sugar may make a diet less healthy.

The main problem is added sugar in foods like soft drinks and sweets. Eating too much added sugar can lead to weight gain, which is linked to diseases like diabetes. UK health guidelines say adults should eat no more than 30 grams of added sugar per day.