Can someone please explain to me why the body needs carbs to feel full longer than if you just ate meat and veggies. And how food companies hope to profit because of that need for carbs above and beyond what the body needs that we wind up obese.

First, there are good carbs and there are bad carbs.

For me, bad carbs are like a gateway drug - the more bad carbs I have, the more I want them. These bad carbs include refined sugars, flour, etc. Things like pastas, potatoes, breads, etc. are bad for me.

Low glycemic veggies and fruits are good carbs and they are full of Fiber - that helps keep you regular and feel full. They also don't affect your blood sugar like the bad carbs do, so you won't release as much insulin as you would with the refined foods.

Since giving up the refined foods and "bad" carbs, I feel so much better. I don't feel bloated. I have more energy.

Hope this helps!