Best Lifestyle Blogs fiber in meat, eggs, or dairy, and typically little or no fiber in processed junk, and therein lies the problem. But wouldn’t at least the protein in that steak fill you up? Surprisingly, even a review supported by the meat, dairy, and egg industries acknowledged that protein intake does not actually translate into eating less later on, whereas you eat a fiber-rich whole grain for supper, and it can cut your calorie intake more than 12 hours later at lunch the next day! You feel full a hundred calories quicker the following day because by then, your good gut bugs are feasting