No, it can't. Cellulose is the main type of insoluble dietary fiber, and is in leafy vegetables, beans, peas, and many other foods. It's widely accepted as bein

No, it can't. Cellulose is the main type of insoluble dietary fiber, and is in leafy vegetables, beans, peas, and many other foods. It's widely accepted as being good for digestion. Too much fiber can cause constipation and gas, but most people probably don't get enough fiber, so that's rarely a problem.