Ketonomy Keto In this episode of Fact File, we bring to you the answers that you have been looking for. Ketonomy Keto Reviews In the short term, people who follow the diet report weight loss. Plain coffee and tea contain zero grams of carbohydrates, fat or protein, so they are A-OK on the keto diet. Studies show coffee lowers the risk of cardiovascular disease and type 2 diabetes. Tea is rich in antioxidants and has less caffeine than coffee; drinking tea may reduce the risk of heart attack and stroke, help with weight loss and boost your immune system.