Keto Weight Loss Plus South Africa the keto diet trend is where you eat only fat and protein, for the most part. That means subsisting on a diet of seeds, nuts, meats, eggs, some dairy, and other low carb items. You can only eat around 20 grams of carbs a day. The idea is that this triggers ketosis. And, ketosis is the process where your body burns fat stores for energy. So, of course, you can see why people would want to get into ketosis.