Exercise ‘not key to obesity fight’

Physical activity has little role in tackling obesity – and instead public health messages should squarely focus on unhealthy eating, doctors say.

They said while activity was a key part of staving off diseases such as diabetes, heart disease and dementia, its impact on obesity was minimal.

Instead excess sugar and carbohydrates were key.

The experts, including London cardiologist Dr Aseem Malhotra, blamed the food industry for encouraging the belief that exercise could counteract the impact of unhealthy eating.

They said there was evidence that up to 40% of those within a normal weight range will still harbour harmful metabolic abnormalities typically associated with obesity.

But despite this public health messaging had “unhelpfully” focused on maintaining a healthy weight through calorie counting when it was the source of calories that mattered most – research has shown that diabetes increases 11-fold for every 150 additional sugar calories consumed compared to fat calories.

Dr Malhotra said: “An obese person does not need to do one iota of exercise to lose weight; they just need to eat less. My biggest concern is that the messaging that is coming to the public suggests you can eat what you like as long as you exercise.

But others said it was risky to play down the role of exercise. Prof Mark Baker, of the National Institute of Health and Care Excellence, which recommends “well-balanced diets combined with physical activity”.

Ian Wright said: “The benefits of physical activity. A healthy lifestyle will include both a balanced diet and exercise.”

He said the industry was encouraging a balanced diet by voluntarily providing clear on-pack nutrition information and offering products with extra nutrients and less salt, sugar and fat.

 

Source: BBC

N.H.Khider

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