The keto diet is a high-fat, low-carbohydrate eating plan. It’s been used to manage seizures in children with epilepsy, but it’s also popular among people looking to lose weight or treat a number of health conditions, including diabetes, cancer, polycystic ovary syndrome (PCOS), and heart disease.

The goal of the keto diet is to get the body into a state of ketosis, which happens when glucose (a type of sugar) from carbohydrates is depleted and the body switches to burning fat for fuel. This process uses fatty acids and ketone bodies for energy, which can result in rapid weight loss.

However, the keto diet is not for everyone and should be considered a long-term lifestyle change. It’s important to work with a registered dietitian who can help create a plan that’s right for you.

A diet rich in healthy fats like those found in the keto diet can improve heart health, lower cholesterol and reduce blood pressure. In addition, many keto dieters find that the diet helps them feel full and satisfied, which can lead to better overall dietary habits.

Some research suggests that the keto diet may be beneficial for brain health, with one study showing that the diet improved memory in mice. Another animal study found that the keto diet reduced oxidative stress and inflammation in the brain.

Keto diets can be difficult to follow, especially for those who aren’t familiar with food labels or have a limited variety of grocery stores in their area. In addition, nutrient deficiencies are common due to the strict nature of the diet, so it’s critical that those following a keto diet plan talk with a registered dietitian or doctor to ensure they are getting enough of the right nutrients.

A well-designed keto plan can include plenty of nutrient-dense plant foods and fatty fish, such as salmon and trout. It can also include high-fat dairy products, such as whey protein and plain Greek yogurt (with no added sugar). Nonstarchy vegetables such as broccoli, cauliflower, green beans, and zucchini can be included in a keto diet. A small serving of berries, which are low in carbs and high in antioxidants, is also a good choice. Even “fad” foods like bacon, pork rinds and double cheeseburgers (hold the bun) can be part of a well-designed keto plan if eaten in moderation.