Between 1970 and 2005 the obesity rate in the United States roughly doubled, according to data from the National Health a and Nutrition Examination Survey, and the USDA.
On the BMI scale over 30 is defined as obese; over 25 is overweight.
We’re eating over 200 calories more each day, most of which come from carbs. We are also eating more meat, although most of that is actually leaner than it used to be, so the calorie contribution to the average diet has gone down.
We’re taking in about 100 calories more in sweeteners each day on average, and High Fructose Corn Syrup has about half of that.
We drink less regular whole milk, and more reduced fat, and fat-free milk.
We consume a lot more oil, particularly vegetable oil, than we were back in the 1970’s. Mostly corn, and soybean and canola oils.
The increase in obesity has come about because we eat a lot more wheat; increased sweeteners, and processed oils instead of fat from meat.