I remember when my DD was in reception and the weighing and measuring scheme was introduced I was horrified, I looked around the school playground and only noticed 2 or 3 children that looked a bit overweight, I couldn't see what all the fuss was about, 6 years on and obesity is a real problem, I'd say around 30% of the children are unhealthily overweight.
My poor DD really struggles with her self esteem because the majority of her friends are obese, at just turned 11 years old she worries that she doesn't have breasts or shapely thighs like her friends. I've privately told her that she doesn't have a problem and that lots of her classmates will struggle with their weight when they're older but it's little consolation to her at the moment. When the year 6 weighing and measuring session came up she got herself into such a state over it I withdrew her, she was convinced she'd be taken into care for being too thin.
She's pretty much the same shape I was as a child, my mum was and still is overweight and always insisted on "feeding me up", I was prescribed complan type supplements to build up my weight, and was frogmarched into boots every week for a weight check, I was never allowed to leave food even when I was full and consequently I have carried those food issues into my thirties and am now fat.
I'm not sure how is the best way to deal with the obesity problem, when I look around at a lot of children nowadays I'm reminded of the humans in the "Wall-E" film, sadly I think it's becoming a reality and it needs to be addressed