It does seems like people are fatter than ever if you look at the stats, but the goalposts seem to have changed regarding what is obese and what is normal.
I remember in my school days (early 80's) there were at least 5 'fat kids' in each class, and to be called 'fatty' you really REALLY looked it. I look at my sons' school there's only one truly 'fat looking' kid in the whole school, the rest just look chunky.
I look at my grandmother and distant relatives, there was only one 'thin' one amongst them, they were mostly chunky/stocky (none in the family were 'fat looking').
By today's standards I think more people are classed as obese.
I'm not saying there isn't a problem, there really is and it has a number of factors. BUT I do think there are also a number of healthy people who, with a standard healthy diet, are heavier and look bigger than others. It's not JUST about the food, or the exercise.
I think we've forgotten that people do come in different shapes and sizes, couple that with the massive array of food choices, even healthy food choices and various advice, one size does not fit all.
It's taken me 35 years to nail down exactly what makes me gain weight, what makes me cruise, and what makes me lose weight... it's really complex, and my lists will vary hugely from others.
I can't help but think that if a simple blood test could show how your body is storing and using food, what it requires, specific to each person, then it would save many people and lot of time, money and desperation.
If I could get a quick and easy diagnosis of whether or not I have a 'fat gene' and what type it was, I cannot see that as a bad thing at all.