It's summer and everyone is dieting to try to get into their summer body! But be careful before cutting carbs completely out of your diet. The keto diet which emphasizes high protein and low carb intake has been gaining popularity this year, but a new medical study shows that cutting carbs could cut lifespans up to four years. It turns out that those who ate a minimal amount of carbs lived four years longer than those who maintained a low-carb diet and one year longer than those who ate a lot of carbs. So basically...if you eat too little or too many carbs, you could be cutting your life short!