Overall, the keto diet is an excellent way to burn fat and lose weight. Eating fewer carbohydrates suppresses appetite, and studies have shown that keto diet participants eat fewer calories overall because of this. Burning fat for energy can lead to rapid weight loss.

Since carbohydrate intake is limited, blood sugar and insulin levels are lowered. This is particularly important for people with type 2 diabetes, which causes a buildup of glucose in the bloodstream. The keto diet can be used to reduce or eliminate the need for diabetic insulin injections.

Fat subunit molecules called triglycerides normally circulate in your bloodstream. High levels of triglycerides are a significant risk factor in the development of heart disease. In the keto diet, because fat is being burned for energy, the number of triglyceride molecules in the bloodstream decreases, reducing the risk of heart disease.

"Bad" (LDL) cholesterol is another risk factor for heart disease. Too much bad cholesterol in your bloodstream builds up in your arteries, narrowing them and causing atherosclerosis, a type of heart disease. The keto diet reduces bad cholesterol levels while increasing the level of "good" (HDL) cholesterol in your body.