Fatness 'to cause 700,000 cancer cases in 20 years'
Almost 700,000 people could get cancer in the next 20 years because of obesity, Cancer Research has warned.
The charity, which is calling for a Jamie Oliver-backed tax on sugary drinks, said immediate action was needed to tackle the "alarming" issue.
Ten types of cancer are linked to obesity, which can also lead to type 2 diabetes, heart disease, stroke and a range of other health problems.
Cancer Research UK and the UK Health Forum warned current trends meant almost three in four adults will be overweight or obese by 2035.
It also predicted that more people would be obese than overweight by 2030, and the rise will cost the NHS an extra £2.5bn a year by 2035.
A 1% drop in the number of people going from being overweight or obese to a healthy weight every year could prevent more than 64,000 cancer cases over the next 20 years, it added.
Cancer Research UK urged a 9pm watershed ban on TV advertising of junk food as well as a 20p per litre tax on sugary drinks.
Oliver said: "We're raising a generation in a society where junk food is cheap, widely advertised, and packed full of sugar. We need to give these kids a chance to be healthier adults, starting with a tax on sugary drinks."
The Government is expected to publish its obesity strategy in the next month, but it has so far resisted calls for a sugar tax on drinks or food.