It's been described as the new smoking - the problem of Obesity. Bigger bodies mean more health problems, and more pressure on the NHS.
Education is key - so teaching healthy eating at a young age is vital. Nationally over a third of 11 year olds are now considered overweight - and if they continue that way into adulthood, they increase their likelihood of getting cancer or heart disease.
A 17-year-old from Hampshire taking drastic action to deal with her weight gain.
Fred and Sangeeta spoke to a top consultant...