What is keto

Last updated: April 1, 2026

Quick Answer: Keto is a high-fat, low-carbohydrate diet designed to shift the body into ketosis, a metabolic state where it burns fat for energy instead of carbohydrates. It typically restricts carbs to under 50 grams daily.

Key Facts

Understanding the Ketogenic Diet

The ketogenic diet, commonly called 'keto,' is a low-carbohydrate, high-fat diet that has gained significant popularity for weight loss and metabolic health. By dramatically reducing carbohydrate intake, the diet forces the body to shift its primary fuel source from glucose to fat, creating a state known as ketosis.

How Keto Works

The standard ketogenic diet maintains a macronutrient ratio of approximately 70-75% fat, 20-25% protein, and 5-10% carbohydrates. This strict ratio triggers metabolic changes where the liver converts fatty acids into ketones, which become the brain and body's preferred fuel source. This metabolic shift typically occurs after 2-7 days of carbohydrate restriction.

Foods to Eat on Keto

Approved keto foods include:

Weight Loss and Health Effects

Many people experience rapid weight loss on keto, often 5-10 pounds in the first week. However, much of this is water weight. Long-term results depend on maintaining the diet and overall calorie intake. Some research suggests keto may help with blood sugar control and mental clarity, though more studies are ongoing.

Potential Side Effects

During the initial adaptation phase, some people experience 'keto flu,' characterized by fatigue, headaches, irritability, and difficulty concentrating. These symptoms typically resolve within 1-2 weeks as the body adjusts to using fat as its primary fuel source.

Related Questions

What is ketosis and how does it work?

Ketosis is a metabolic state where the body burns fat for energy instead of carbohydrates, producing ketones as fuel. It occurs when carbohydrate intake is severely restricted.

Is the keto diet safe long-term?

Research on long-term keto safety is ongoing. Consult healthcare providers before starting, especially if you have existing health conditions or take medications.

What are the main differences between keto and low-carb diets?

Keto is stricter, limiting carbs to under 50g daily to maintain ketosis, while low-carb diets are more flexible and don't necessarily trigger ketosis.

More What Is in Daily Life

Also in Daily Life

More "What Is" Questions

What is the longest word in the worldWhat is ihg one rewardsWhat is lymphatic drainageWhat is mxp airportWhat is fiber foodWhat is msg in cookingWhat is iyere in englishWhat is rwa in financeWhat is www perplexity aiWhat is an apiWhat is squash foodWhat is the main function of the headrest in a carWhat is ldh in blood testWhat is today's wordle answerWhat is vfx artist

Trending on WhatAnswer

How Does GPS Workdifference between ai and mlHow To Start a BusinessDifference Between HTTP and HTTPSHow Does the Stock Market WorkHow To Learn ProgrammingDifference Between LLC and CorporationDifference Between Virus and BacteriaCan you increase your iqIs it safe to invest in bonds

Browse by Topic

ArtsBusinessDaily LifeEducationFoodGeographyHealthHistoryLanguageLawMathematicsNaturePoliticsPsychologyScienceSpaceSportsTechnology

Browse by Question Type

Can YouDifference BetweenDoesHow DoesHow ToIs ItWhat CausesWhat DoesWhat IsWhen WasWhere IsWho IsWhy DoWhy Is

Sources

  1. Wikipedia - Ketogenic Diet CC-BY-SA-4.0
  2. NIH - Effects of Ketogenic Diet Public Domain