INSIDER 37-year-old Casey Gemmell lost 150 pounds by removing four foods from her diet. Rather than calorie counting, Gemmell only cut cheese, pasta, bread, and soft drinks out of her diet. She accompanied her lenient diet with daily exercise. It only took one photo to change 37-year-old Casey Gemmell’s life. When she first saw the picture, taken at her son’s birthday party and posted by a friend on Facebook, she literally couldn’t believe what she was looking at.See the rest of the story at Business InsiderNOW WATCH: What humans will look like on MarsSee Also:What it takes to become an Emirates flight attendant11 celebrity pairs who often play on-screen couplesSomeone added US immigrant detention centers to Wikipedia's list of concentration camps