Food, glorious food

I just love peanut butter pretzels....or wait...is it caramel apples? Grandma's homemade donut recipe...that's it! I gt on a kick of something that I really like and I can't get enough of that one item. It was lasagna for a while, then it was salad with feta cheese and cranberries. I even went through a stage of bri cheese and rice crackers. The craving, if you will, usually lasts a couple of weeks and then another one pops up in my head. Is this normal? Does anyone else out there have the same issue?