Why are we still so fat?

Obesity's genetic connection was conclusively demonstrated in the 1980s in a series of papers showing that body weight is strongly inherited, almost as strongly as height

Whenever I see a photo from the 1960s or 1970s, I am startled. It’s not the clothes. It’s not the hair. It’s the bodies. So many people were skinny.
 
In 1976, 15 percent of American adults were obese.
 
Now the it’s nearly 40 per cent. Scientists do a lot of hand-waving about our “obesogenic environment” and point to favourite culprits: the abundance of cheap fast foods and snacks; food companies making products so tasty they are addictive; larger serving sizes; the tendency to graze all day.
 
Everyone — from doctors to drug companies, from public health officials