Keto Diet for Beginners (2024)

The ketogenic diet, or keto for short, is a high-fat, moderate-protein, low-carbohydrate diet that has gained a lot of attention as a weight loss method in recent years. But does it really work? If you're thinking about trying the keto diet, here's a look at what to expect if you're a beginner.

What Is a Keto Diet?

The keto diet may sound trendy, but it has been around for a while. It first surfaced in the 1920s. Originally, doctors recommended it to help with conditions like epilepsy and diabetes. But today, some people use the keto diet to lose weight.

For many Americans, carbs like breads, pasta, or potatoes make up more than 50% of their daily diet. Your body breaks down the glucose (sugars) found in carbs to fuel your body with energy.

In the keto diet, the goal is to swap out the glucose calories with fat. In a typical keto diet, your nutrition centers on fatty foods. They'll make up anywhere from 60% to 80% of your daily calories. Proteins make up 15% to 20%. Carbs are restricted to no more than 50 grams. This makes it quite a restrictive diet.

Studies show that those who follow the low-carb keto diet are more likely to lose weight within the first 3 to 6 months than they would if they followed a more balanced diet. But because the keto diet calls for drastic changes in your daily diet, it's best to ask your doctor or a nutritionist if it's right for you before you get started.

How Does the Diet Work?

When you're on the keto diet, you’re eating too few carbs to support your body's energy needs. As a result, your body turns to burning your stores of body fat to fuel your energy.

When your body burns body fat for fuel, it produces ketones, substances made in your liver. Your body enters a metabolic state called "ketosis."

If you follow the keto diet strictly, your body will reach ketosis in about 4 days. You will likely even see several pounds of weight loss the first week.

What Are the Types of Keto Diet?

If you're planning to start the keto diet, keep in mind that there are several types. Each one focuses on slight changes in the proportion of fat, protein, and carbs in your daily diet.

The types of keto diet include:

Standard ketogenic diet (SKD). This is a very low-carb, moderate-protein, high-fat diet. It typically contains 70% fat, 20% protein, and only 10% carbs in your daily diet.

Cyclical ketogenic diet (CKD). This involves periods of higher-carb "refeeds," such as 5 ketogenic days followed by 2 high-carb days.

Targeted ketogenic diet (TKD). This diet allows you to add carbs around intense workouts.

High-protein ketogenic diet (HPKD). It's similar to the SKD, but you can eat more protein. The ratio is usually 60% fat, 35% protein, and 5% carbs.

The standard and high-protein diets have been researched and studied the most. They're also the most common. The cyclical and targeted keto diets are recent additions and are mostly used by athletes or bodybuilders

What Is the Keto Diet Used For?

At first, the keto diet was primarily used as a way to help people with seizures. Over time, experts applied the benefits to several other health conditions, including:

  • Cognitive and memory improvement
  • Type 2 diabetes
  • Cancer such as glioblastoma
  • Psychiatric disorders
  • Alzheimer's disease
  • Autism
  • Obesity

The keto diet has been highly effective for certain conditions, especially type 2 diabetes. One study looked at the before-and-after keto diet results for 349 adults with type 2 diabetes over a period of 1 year. It reversed diabetes in about 60% of the participants. The keto diet also helped many of those in the study to lower their dependence on prescription insulin drugs.

If you have a health condition, it's best to talk to your doctor before you start the keto diet.

How Do You Start a Keto Diet?

To start the keto diet, you may have to toss a few things out of your pantry and add certain high-fat food sources to include in your daily meals.

Talk to your doctor or a nutritionist about what will work best for you. This is especially important if you have other dietary restrictions, such as being a vegan, vegetarian, or having certain food allergies. Experts can help you find alternatives or substitutes and come up with a meal plan that best suits your needs.

Before you start changing your meals, here are some questions you should consider or ask your doctor:

  • Will the keto diet help manage certain health conditions?
  • Do you need to lose weight?
  • What are some of the side effects?
  • Should you take or continue vitamins or supplements during the diet?
  • How long should you stay on the keto diet?
  • Should you exercise? If so, how much?

What Can You Eat on a Keto Diet?

Some keto-friendly foods are:

  • Nuts
  • Seeds
  • Full-fat dairy products
  • Greek yogurt
  • Non-starchy and fibrous vegetables.
  • Fatty oils
  • Meat
  • Fish
  • Eggs
  • Cottage cheese
  • Coconut

For the 20 to 50 grams of carbs per day, choose non-starchy veggies like:

  • Broccoli
  • Cauliflower
  • Peppers
  • Mushrooms
  • Leafy greens
  • Asparagus
  • Green beans

Foods to avoid or limit include starchy and high-carb foods like:

  • Bread
  • Baked goods
  • Sugary sweets
  • Pasta
  • Rice
  • Breakfast cereals
  • Starchy vegetables like potatoes, sweet potatoes, corn, peas, and beans
  • Fruits high in sugars
  • Wine
  • Beer, unless it's low-carb

In terms of acceptable drinks on the keto diet, you can opt for unsweetened coffee or tea. Cut down on how much alcohol you drink. If you drink alcohol, choose low-carb liquors like tequila or vodka and use soda water as a mixer.

What Snacks Can You Eat on a Keto Diet?

Keto-friendly snacks are a good balance of healthy fats and moderate protein with low-carb content. You can make some at home or use store-bought versions.

This includes snacks such as:

  • Brazil nuts
  • Walnuts
  • Hazelnuts
  • Peanuts
  • Coconut yogurt
  • Guacamole
  • Cheese
  • Canned tuna
  • Meat jerky
  • Olives
  • Pork rinds
  • Seaweed snacks
  • Hard-boiled eggs
  • Jicama (low-carb root vegetable).

These snacks can help you manage your hunger between meals and stick to staying in ketosis in the long term.

Are There Risks From a Keto Diet?

While research shows that the keto diet helps some people lose weight or manage health conditions, the restrictive diet isn't a good idea for everyone. It may be harmful if you follow the diet incorrectly or without proper supervision.

The keto diet also affects each person differently. While some people can transition easily to the dietary changes, others may find that their body takes longer to adjust to the sudden changes.

It's important to get your cholesterol checked regularly. The keto diet may decrease cholesterol for some people, but it may increase cholesterol for others.

The low-carb part of the diet may have long-term consequences for some people. For many, cutting out carbs so suddenly and drastically can lead to what many popularly call the "keto flu." You may get flu-like symptoms as your body navigates switching from burning glucose to fat for energy.

Symptoms of keto flu include:

  • Stomach aches or pains.
  • Nausea
  • Dizziness
  • Sugar cravings
  • Cramping
  • Muscle soreness
  • Feeling cranky
  • Diarrhea or constipation
  • Trouble falling asleep or staying asleep
  • Poor focus and concentration
  • Brain fog

Usually the symptoms of keto flu kick in a day or two after you cut carbs from your daily diet. They may last up to a week or less, but in severe cases, they could last up to a month. If the symptoms are severe or persist, see your doctor or stop the diet.

To lessen the chances of getting the keto flu, start the diet slowly, stay hydrated, do only light exercises, and get plenty of rest as your body gets used to your new meal plan.

Another pitfall that experts warn about is that there are too many types of keto diet and it's easy to do it incorrectly. You may end up eating too many saturated fats instead of healthy fats that can put you at risk for high levels of bad cholesterol and heart disease. You may also not reach ketosis if you don't follow the diet properly.

The keto diet can also affect your gut health. That's because the diet mostly requires you to cut out nutrient-dense and fiber-rich foods like legumes, whole grains, starchy vegetables, and fruits. The studies on keto's effects on gut health are conflicting. There needs to be more research done on this topic.

Other side effects can include:

  • Low bone density and bone fractures
  • Constipation
  • High cholesterol
  • Kidney stones
  • Slower growth than typical
  • Fatigue

If you're planning to give the keto diet a try for the first time, ask your doctor, nutritionist, or dietitian if it's right for you. They'll help you come up with a tailored meal plan that may work best for you.

Keto Diet for Beginners (2024)


How does the keto diet work for beginners? ›

The ketogenic or keto diet consists of a very high-fat diet that is also very low in carbohydrates. This combination of low carbs and high fats helps many people shed excess body fat while staving off hunger which is a very common occurrence in other weight loss plans.

What is the first thing you do on keto diet? ›

Starting a ketogenic diet is pretty straightforward. You simply have to focus on curbing your carbohydrate intake and increasing your fat and protein content. The lower your carbohydrate consumption will be, the easier it will be for you to achieve your intended results.

What are the basic rules of a keto diet? ›

The ketogenic diet typically reduces total carbohydrate intake to less than 50 grams a day—less than the amount found in a medium plain bagel—and can be as low as 20 grams a day. Generally, popular ketogenic resources suggest an average of 70-80% fat from total daily calories, 5-10% carbohydrate, and 10-20% protein.

What is the simplest way to do keto? ›

Keto Diet for Beginners
  1. Decrease carbs (but eat more veggies) Eating a very low carb diet is important to achieving ketosis, but low carb does not mean no carb. ...
  2. Decrease stress. ...
  3. Increase healthy fats. ...
  4. Increase exercise. ...
  5. Increase your water intake. ...
  6. Maintain your protein intake. ...
  7. Maintain your social life!

What is the trick to keto diet? ›

Strategies for encouraging the body to enter ketosis include:
  1. Significantly reducing the carbohydrate intake. ...
  2. Increasing physical activity. ...
  3. Fasting for short periods. ...
  4. Increasing healthful fat intake. ...
  5. Testing ketone levels. ...
  6. Checking protein intake. ...
  7. Consuming more MCT oil.

What happens to your body when you first start a keto diet? ›

The initial switch to a keto diet can be one of the biggest issues for new dieters. Well-known side effects can include weakness and fatigue (16). These often cause people to quit the diet before they get into full ketosis and reap many of the long-term benefits. These side effects are natural.

What is the correct way to start keto? ›

Following a ketogenic diet is the most effective way to enter ketosis. Generally, this involves limiting carb consumption to around 20 to 50 grams per day and filling up on fats, such as meat, fish, eggs, nuts, and healthy oils ( 6 ). It's also important to moderate your protein consumption.

What happens on day 3 of keto? ›

Day 3. Buckle up. This will probably be the worst carb-flu day you experience. Your body is realizing it's not getting carbs anymore, and the transition process to begin breaking down fats for fuel can feel brutal at first.

What is forbidden in the keto diet? ›

Sugary Foods and Sweets

Sweet treats and sugary foods are a definite "no" when following a keto diet. Consuming candies, pastries, and sugary drinks leads to a quick rise in insulin levels. Elevated insulin levels hinder fat burning and encourage fat storage, making it hard to achieve and maintain ketosis.

How many eggs a day on a keto diet? ›

It's totally fine and safe to eat up to 6 eggs a day while on the keto diet. You can consume even more eggs per day occasionally, as long as you make sure that you eat your greens, healthy fats and proteins from other sources.

What foods should I avoid when starting keto? ›

Keto No-Go - What Can You Not Eat On Keto?
  • On a ketogenic diet, you should avoid high-carb foods like grains, sugars, and some fruits. ...
  • - Grains: Rice, wheat, oats, barley, rye, quinoa, buckwheat, etc.
  • - Starchy Vegetables: Potatoes, peas, sweet potatoes, yams, corn, cassava, artichoke, etc.
Apr 3, 2023

How do I start my day on keto? ›

A hearty breakfast should give you the energy and nutrients you need to keep you going throughout the day. Keto breakfasts are usually high in protein which is brilliant because research suggests that the daily addition of a high-protein breakfast could help to curb cravings.

How do you survive the first day of keto? ›

How to Survive & Thrive On a Keto Diet
  1. 1.The First 10 Days May Be The Toughest. ...
  2. Incorporate Electrolytes to Prevent or Mitigate Unpleasant Keto Side Effects. ...
  3. Fat-Boosted Coffee and Matcha is a Game-Changer! ...
  4. Start Gradually Preparing Before “Going Live” ...
  5. Think About Protein.

Why is keto so hard at first? ›

You'll Probably Feel Terrible at First

On the keto diet, it can be tough to get a good balance of sodium, magnesium and potassium since the latter two come mainly from carb-rich foods such as beans, fruit and potatoes. Keto flu has symptoms like brain fog, drowsiness, headaches and even nausea.

How long does it take for keto diet to start working? ›

Weight loss from keto varies from person to person. Generally, if you maintain a daily caloric deficit of around 500-700 calories, you can expect noticeable weight loss after anywhere from 10 to 21 days. However, remember that weight loss is not linear and some may see results sooner.

How much weight can you lose in a month on keto? ›

If a person follows the 75% fat /20% carb/5% fat keto diet, average results may look like this: Weeks 1–2: rapid weight reduction phase due to water loss – up to ten pounds. Weeks 2–4: standard weight reduction – between one and two pounds per week. After the first month – slow weight loss – around one pound per week.

How do beginners get into ketosis? ›

Fasting for 12 hours is the fastest way to get into ketosis. 3 When you're initiating a very low-carbohydrate ketogenic diet, the fewer carbs you eat in the first 24 hours and the next few days, the more quickly your glycogen reserves will get depleted and the faster you'll get into ketosis.

Top Articles
Latest Posts
Article information

Author: Zonia Mosciski DO

Last Updated:

Views: 6124

Rating: 4 / 5 (71 voted)

Reviews: 86% of readers found this page helpful

Author information

Name: Zonia Mosciski DO

Birthday: 1996-05-16

Address: Suite 228 919 Deana Ford, Lake Meridithberg, NE 60017-4257

Phone: +2613987384138

Job: Chief Retail Officer

Hobby: Tai chi, Dowsing, Poi, Letterboxing, Watching movies, Video gaming, Singing

Introduction: My name is Zonia Mosciski DO, I am a enchanting, joyous, lovely, successful, hilarious, tender, outstanding person who loves writing and wants to share my knowledge and understanding with you.