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The ketogenic diet is a high-fat, adequate-protein, low-carbohydrate diet that in medicine is used mainly to treat hard-to-control epilepsy in children. The diet forces the body to burn fats rather than carbohydrates.

The keto diet has its roots in the decades-old therapeutic ketogenic diet. Clinically, the ketogenic diet is used in neurologic medicine, most notably to reduce hard-to-control seizures in children. Studies also suggest possible benefits in other brain conditions such as Parkinson’s and Alzheimer’s diseases.

How it works

With keto, your body enters a state of ketosis. It’s breaking down stored body fat and dietary fat into substances called ketones for energy – instead of using carbs for energy.

What can I eat unlimited on keto diet?

Here are some healthy foods to eat on a ketogenic diet.
Seafood. Fish and shellfish are very keto-friendly foods.
Low-carb vegetables.
Cheese.
Avocados.
Meat and poultry.
Eggs.
Coconut oil.
Plain Greek yogurt and cottage cheese.

What can I not eat on keto diet?

FOODS TO AVOID ON A KETO DIET
Oatmeal.
Wheat Grains.
Whole Wheat Flour.
Rice.
Quinoa.
Rye.
Barley.
Corn.
Pasta
Certain alcoholic beverages: Beer and sugary mixed drinks.

What is a typical meal on a keto diet?

A healthy ketogenic diet should consist of about 75% fat, 10-30% protein and no more than 5% or 20 to 50 grams of carbs per day. Focus on high-fat, low-carb foods like eggs, meats, dairy and low-carb vegetables, as well as sugar-free beverages. Be sure to restrict highly processed items and unhealthy fats.

Keto-friendly beverage choices

Water: Water is the best choice for hydration and should be consumed throughout the day.
Sparkling water: Sparkling water can make an excellent soda replacement.
Unsweetened coffee: Try heavy cream to add flavor to your cup of joe.
Unsweetened green tea: Green tea is delicious and provides many health benefits.

U.S. News Best Diet Rankings

Keto Diet ranked #37 in Best Diets Overall. 39 diets were evaluated with input from a panel of health experts.