Certain vegetables 'could be making people overweight'

Potatoes have emerged as a key culprit in the five-a-day diet

Potatoes have emerged as a potential vegetable that could make people gain weight, due to their high starch and low water content
Potatoes have emerged as a potential vegetable that could make people gain weight, due to their high starch and low water content

Certain vegetables could in fact be making people overweight, a new study has shown.

Potatoes have emerged as a culprit in the five-a-day diet because of their high starch and low water content, according to researchers.

Researchers at the Harvard School of Public Health also discovered that different fruits and vegetables have different effects on weight gain - with blueberries coming out tops and potatoes not doing so well.

A handful of blueberries a day was linked to about a pound and a half of weight loss, possibly because they are replacing a fatty desert - or because they contain metabolism-altering compounds called polyphenols.

But potatoes were linked to weight gain among participants of the study - with researchers recommending a swap to wholegrain rice or bread instead.

Over 24 years, participants were asked every four years how often they ate 131 different foods, as well as being weighed and asked about exercise, TV and smoking habits.

Unsurprisingly, a high intake of fruit and vegetables was linked to weight loss over the 24 year period.

Out of the vegetables most likely to help reduce obesity, those such as cauliflower, Brussels sprouts and broccoli were top performers.

Other fruits linked to weight loss included prunes, apples, pears and strawberries.

Two thirds of adults and a quarter of children between two and 10 years old are overweight or obese in the UK, according to estimates by the government body Public Health England.

And by 2034, 70% of UK adults are expected to be overweight or obese, according to the International Journal of Obesity.

In the US, meanwhile, more than one-third of American adults is obese (34.9%), according to the most recent figures released by the Journal of American Medicine.

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