Years ago I read a book called Diabetes Rising. That book was about the rising number of diabetics, particularly type 2 diabetics. Maybe we should be calling it "obesity rising" (although the percentage of type 1 diabetics is going up as well).
There are now more obese people than overweight people in the United States.
This is scary. Very very scary. Obesity amplifies all the health risks that are worsened by being overweight.
Luckily it turns out that just walking every day benefits your health much more than you realize.
Most people think you have to exercise much more seriously (lift weights, do aerobics, etc.) in order to reverse the health risks of being overweight or obese, but studies are finding out that simply incorporating more walks into your life can lower your blood pressure, your risk of diabetes, and your risk of depression -- even reduce your belly fat. Plus it can encourage you to be more active without even realizing it.
So don't discount the power of walks. Even if all you have the time or willpower to do is walk around the block every day, do it. It can still make a big difference.