The keto diet triggers your body to produce small fuel molecules called ketones, an alternative energy source produced when blood sugar (glucose) is scarce. When carbs or calories are limited, your liver generates ketones from fat. These ketones become the primary fuel source, especially for the brain.

Despite the brain's high energy needs, it can't directly use fat for fuel, relying on glucose or ketones. By shifting your body's fuel supply mainly to fat, the keto diet boosts fat burning, especially when insulin levels decrease.

Beyond weight loss, this diet offers benefits like reduced hunger, stable energy levels without sugar spikes, and increased alertness.

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Ketosis, a metabolic state from ketone production, is typically achieved through fasting, but the keto diet, which also triggers ketosis, can be sustained indefinitely, mimicking fasting benefits without continuous fasting.

The keto diet's low-carb approach helps regulate glucose levels, potentially aiding those with type 2 diabetes by stabilizing blood sugar and reducing insulin needs. Studies suggest it may also improve cholesterol, blood pressure, and insulin sensitivity while lessening medication dependence.