A keto diet is a low-carb, high-fat diet that aims to put your body into a metabolic state called ketosis. This state occurs when your body doesn't have enough glucose (sugar) to use as energy, so it starts breaking down fat into molecules called ketones, which become your body's primary source of energy.

The goal of a keto diet is to drastically reduce your carbohydrate intake and replace it with healthy fats and moderate amounts of protein. This can lead to rapid weight loss, improved blood sugar control, and increased energy levels. However, it's important to note that a keto diet may not be suitable for everyone and should be approached with caution, as it can cause side effects such as headaches, fatigue, and constipation. It's always best to consult with a healthcare professional before starting any new diet.