Take a few minutes to read this article on the Forbes website: Sweet And Sour: The Media Decided Fructose Was Bad For America; But Science Had Second Thoughts.
While it is correct to state that physical activity and active lifestyles are becoming less common among common folk these days, this is not the basis of being overweight and/or obese. And yes, it is true that carbohydrates can make an individual gain weight, however, not all carbohydrates are equal. The carbohydrates that are causing obesity are the ones that are empty calories that aren’t paired with fiber, vitamins, nutrients, water and phytochemicals among other things that come packaged with whole foods. Whole-food carbohydrates like rice, bananas, peaches, carrots and potatoes are not evil. These foods cannot make you obese.