Keto Diet Plan
Home Blog A Detailed Introduction to the Keto Diet Plan

A Detailed Introduction to the Keto Diet Plan

by Dr. Lina Velikova, MD

The ketogenic diet, or just keto diet, has gone viral. Last year was officially the year of the keto diet, and there are no signs of it slowing down in 2019. Since the keto diet is relatively hard to follow, it comes as no wonder that the internet is flooded with guides and several different variations of the keto diet plan.

In a nutshell, the keto diet is very low in carbs but rich in fats. It decreases blood sugar and insulin levels, shifting the body’s metabolism toward burning fats for energy which results in the production of ketones.

You can lose weight fast on this diet, which is why it’s so popular. But is it good for you? Here’s everything you need to know about the keto diet.

What Is the Keto Diet Exactly?

The keto diet, shortened from ketogenic, is a particularly low-carb, high-fat diet that’s very similar to other low-carb diets, including the Atkins approach. The keto diet radically reduces carbohydrate intake while substituting the body’s main energy sources with fats. This decline in carb usage leads the body to a metabolic state called ketosis.

When this happens, your metabolism starts to burn fat for energy. This process is so amazingly efficient, it helps weight loss along with other health benefits. The not-so-obvious advantages of eating keto foods are being hungry less often and having a constant amount of energy. This can help keep you sharp and focused during the day.

Ketogenic diets are characterized by a massive decrease in blood sugar and insulin levels. Sugar is the brain’s main food, but fortunately, the brain can also be fed with ketones, which are produced from fat in the liver.

For most people, eating keto diet foods appears to be very safe. However, it is still controversial and three groups of people require special consideration: patients with diabetes who take medications like insulin, people with high blood pressure on antihypertensive drugs, and breastfeeding women. In these cases, it’s good to see a doctor and evaluate your health and adapt medications before starting the keto diet.

What Can You Eat on a Keto Diet?

Here are all the keto foods you can eat on this diet, sorted by carb content per 100 grams (in ascending order):

  • Natural fats like butter and olive oil (0 g of carbs)
  • Meat (0 g of carbs)
  • Fish and seafood (0 g of carbs)
  • Eggs (1 g of carbs)
  • Cheese and other dairy products (1 g of carbs)
  • Vegetables that grow above ground (1-5 g of carbs)

What Should You Avoid on a Keto Diet?

And here are the foods that prevent you from achieving ketosis, sorted by carb content per 100 grams (in descending order):

  • Candy (70 g of carbs)
  • Chocolate bars (60 g of carbs)
  • Donuts (49 g of carbs)
  • Bread (46 g of carbs)
  • Pasta (29 g of carbs)
  • Rice (28 g of carbs)
  • Soda/Juice (10 g of carbs)
  • Fruit (6-20 g of carbs)
  • Vegetables that grow below ground (7-17 g of carbs)
  • Beer (4 g of carbs)

Benefits of a Keto Diet Meal Plan

A keto diet provides several health benefits similar to those of other low-carb diets, but it appears to maximize the following benefits:

  • Weight loss
  • Reduced body fat percentage
  • Calmer stomach
  • Control over the appetite
  • Control of blood sugar and the possibility of reversing type 2 diabetes
  • Improved energy and mental performance
  • Improved health markers (HDL, triglycerides)
  • Increased physical endurance

Several studies have demonstrated that keto meals can provide benefits for different health conditions, particularly for metabolic, neurological, or insulin-related diseases. Moreover, the ketogenic diet was developed to treat neurological disorders such as epilepsy.

Some of the diseases that can be influenced positively by switching to keto are listed below:

  • Heart disease – by reducing risk factors such as body fat, HDL cholesterol levels, high blood pressure, and elevated blood glucose.
  • Cancer – by slowing the tumor growth.
  • Alzheimer’s disease – by reducing the symptoms and delaying the progression.
  • Epilepsy – by reducing the number of seizures in epileptic children.
  • Parkinson’s disease – by improving the symptoms.
  • Polycystic ovary syndrome – by decreasing insulin levels.
  • Brain injuries – by aiding recovery after a brain injury or concussion (only animal studies).
  • Acne – by lowering insulin levels and due to eating less sugar and processed foods.

How to Start the Keto Diet

First, find good source of information about the keto diet plan for beginners.

Keto Diet Plan

There are some natural principles that you should follow:

  • Eliminate carbs from your diet.
  • Limit protein intake – remember that this is a low-carb diet but not a high protein one.
  • Use fat to help you achieve ketosis.
  • Drink lots of water to avoid dehydration.
  • Keep up electrolytes, especially salt.
  • Eat only when you are hungry.
  • Prepare your meals according to keto recipes.
  • Focus on whole foods instead of processed ones.
  • Exercise regularly.

A keto diet can be straightforward if you learn some basic skills, such as how to prepare easy and enjoyable meals, how to add more fats in your diet, and how to eat out and stay keto.

How to Get into Ketosis

The main goal of the keto diet is to get into ketosis, i.e., get your body to start burning fat. How do you do this? First, the most important thing is to restrict carbohydrates to 20 grams per day or less. This requirement satisfies the strict low-carb keto diet principles. However, dietary fiber (which is technically a carb) should not be limited since it actually helps you in achieving ketosis. If you aren’t sure how much 20 grams of carbs is, you can use published keto diet recipes and meal plans, which are all designed with less than 20 grams of carbs. Thus, no counting is required.

The good news is that just restricting carbs to produce some level of deficiency eventually results in ketosis. To be more satisfied with your keto diet results, you have to go through some additional steps, like regulating your protein intake and increasing your fat intake.

Second, your protein intake should be limited to moderate levels because excess protein is converted to glucose in the body, reducing ketosis. Therefore, about 1.5 grams of protein per kg of body weight per day are enough if you want to maintain a proper diet.

Third, eating enough fat is crucial to staying satisfied. If you add intermittent fasting, ketosis will come even faster, but unlike hunger, a keto diet is sustainable and can make you feel great. One option if you feel hungry all the time is to add more fat (butter, olive oil, etc.) in your meals.

How Long Does It Take to Get into Ketosis?

If you remain below your standard level of carbohydrate intake, then you should achieve a state of ketosis within two or three, though in some cases up to seven, days. The quickest way to get into ketosis is to fast and exercise, which stimulates the consumption of glycogen in your body. This will deplete your sugar reserves and switch your metabolism towards burning fat.

A keto diet plan for beginners can be started by eating more fat to speed up bringing on the ketosis state. Simultaneously, you have to begin cutting out refined carbs. Another option, but a difficult one to execute, is to drink only water for a few days.

Excreting ketones in urine is a sure indication you’re in ketosis. However, to see if you’re in it special ketosis strips that determine if ketones are in the urine can be used. A bit of an expensive and invasive approach is to look for ketones in your blood with a blood ketone meter.

Keto Diet Plan

What Are the Symptoms of Being in Ketosis?

Most people who begin a ketogenic diet will feel some unpleasant symptoms, known as “keto flu.” These symptoms start a few days after you begin the diet, and they include, but are not limited to, the following:

  • Light nausea
  • Headache
  • Fatigue
  • Dizziness
  • Difficulty focusing (“brain fog”)
  • Lack of motivation
  • Irritability

However, these initial ketosis symptoms disappear as your body adjusts to enhanced fat burning. Usually, the adaptation takes about a week.

The reasons these flu-like symptoms occur are linked to increased water excretion, typical after previously retaining water from consuming carb-rich foods. You may also notice increased urination and a loss of extra salt, as well. This results in dehydration and a lack of salt. These processes may also be behind most flu symptoms.

However, these signs of ketosis can be alleviated or prevented by drinking enough water and eating enough salt. A simple solution to these flu-like symptoms is to drink bouillon or broth at least once a day.

Other Common Keto Diet Side Effects

There are other more common side effects, most of which can be considered a typically negative experience. However, getting more water and salt can be helpful for all these side effects as well.

Other side effects include:

  • Keto breath which smells like nail polish remover (acetone is a ketone)
  • Metallic taste in the mouth
  • Leg cramps
  • Constipation
  • Heart palpitations
  • Reduced tolerance to alcohol
  • Appetite suppression
  • Temporary hair loss
  • Elevated cholesterol
  • Keto rash
  • Higher fasting blood glucose
  • Gout
  • Gallstone problems
  • Keto crotch

Just as there’s evidence that the keto diet plan works and delivers fast, the evidence against it (especially long-term) is starting to pile up as well.

For one, its benefits decrease over time, and you lose not only excess fat but lean weight too. Second, it almost certainly raises your risk of developing non-alcoholic fatty liver disease, which can lead to cirrhosis. Lastly, and most importantly, research has shown that it can increase arterial stiffness, which can, in turn, increase your risk of developing cardiovascular diseases, and it also increases the risk for colon and respiratory cancer.

Because of these potential health risks, it is not advisable to live on this diet long-term.

Keto Diet Plan

The Keto Diet and Seniors

Aging should in no way prevent someone from going on a keto diet; in fact, it may be even more beneficial for older adults. Besides, too many carbs and too much processed food never help improve elderly nutrition.

There are many advantages for seniors who decide to try a keto diet menu to lose weight. The main benefits are linked to supporting mental and physical health at any age.

Here are some of the most noteworthy advantages to maintaining a ketogenic diet:

  • Defeating insulin resistance – Many senior citizens are overweight and dealing with insulin-related conditions like diabetes.
  • Improved bone healthOsteoporosis symptoms can be alleviated by a keto diet in two ways: by lowering the production of toxins, which interfere with absorption, and consuming a wide range of foods the rich in micronutrients, rather than being overloaded on a specific micronutrient (calcium).
  • Reducing inflammation – This helps improve the symptoms caused by joint issues like arthritis and other inflammatory conditions.
  • Avoiding nutrient deficiencies – Common ketogenic diet foods are rich in iron, vitamin B12, fat-soluble vitamins like vitamin D, and animal proteins. The exception here is the vegan keto diet, where the deficient nutrients and vitamins should be provided from plant sources.
  • Controlling blood sugar – This is necessary not only for diabetes but also for brain-related conditions like Alzheimer’s disease, dementia, and Parkinson’s disease.

Ketosis could probably repair some of the damage caused by treating our bodies badly. However, when it comes to senior adults, it could impact their longevity, as well. The ketogenic diet can help seniors improve their health so that they can thrive, get sick less often, and feel less pain in their later years. More information regarding senior health can be obtained in our blog on

Tips for Sustaining a Keto Meal Plan

  • Skip meals Thinking of breakfast as the most important meal of the day could be easily changed when on this diet. If you aren’t starved when you wake up, you can skip breakfast, grab a quick keto shake, or have a cup of coffee alone. A reduced appetite is a common feature of the diet, so skipping a meal isn’t a problem. However, if you are hungry when you wake up but are short on time, a keto breakfast can be tasty, filling, and quick to prepare.
  • Prepare your own meals – Delicious meals for lunch or dinner can be easily prepared by including meat or fish with a salad, for example. A vegetarian keto diet is also an option—e.g., vegetables cooked with melted butter, cheese, or a rich sauce.
  • Load up on keto vegetables – These include celery, spinach, asparagus, avocado, zucchini, cauliflower, cucumber, cabbage, broccoli, kale, brussels sprouts. As you may notice, most of them are green! And they grow above ground. This is quick way to tell which vegetable has too many carbs.
  • Substitute out bread Not surprisingly, bread is one of the most common foods that people miss on this diet plan. But fear not, there are some tasty recipes for keto bread, which is low enough in carbohydrates to be suitable for this diet.
  • Dine out When you’re dining out, avoid foods like bread or pasta and request foods with extra fat (i.e., butter or olive oil) if you need it.
  • Eat smart Choose real food, not specifically “low-carb” products. Your goal should be to stay health, not just lose weight.
  • Calculate your carbs You can also use a keto calculator to estimate how many carbs you eat in a day, roughly.
  • Can’t give up the desserts? – Don’t worry, there are also keto desserts. They’re low in carbs but still delicious.
  • Avoid snacking when you aren’t hungry – However, eating keto snacks will minimize the damage, and they’re fine for when you get hungry.
  • Treat yourself – But go for healthy, moderate-carb choices like berries, nuts and seeds, and dark chocolate.
  • Sleep enough – Get at least seven hours per night and keep your stress under control. It’s been shown that sleep deprivation and stress hormones increase blood sugar levels, slowing ketosis and weight loss, and they might make it harder to resist temptation and stick to your diet.

Keto Diet Plan


What are ketones and how do they work?

The “keto” in a ketogenic diet comes from the names of small fuel molecules called “ketones.” The ketones are transformed from fat in the liver when you eat very few carbs and moderate amounts of proteins. They’re an alternative fuel source for the body, used when blood sugar (glucose) is in short supply.

Ketosis is a normal metabolic process, which arises when there aren’t enough carbohydrates in your food. In this case, cells burn fat for energy and make ketones. It can also occur after training for a long time or during pregnancy. For people with poorly controlled diabetes, ketosis is a sign of not using enough insulin. Ketosis can become dangerous when ketones rise, which can lead to dehydration and change the electrolyte balance in the blood.

Are ketones bad?

No. Ketones are only bad when they’re contributing to the life-threatening condition called ketoacidosis. Ketoacidosis is a dangerous medical state that’s isolated from the “nutritional ketosis” of a keto diet. Nutritional ketosis is an entirely normal process. However, it’s important to differentiate between ketosis vs ketoacidosis because they are not the same condition. You cannot get into ketoacidosis just from dieting.

Why is ketosis bad for you?

Ketosis isn’t usually bad for you. While it can be beneficial for a number of people, certain groups of patients—such as those with type 1 diabetes, cystic fibrosis-related diabetes, pancreatectomy, type 2 diabetes with minimal pancreatic function—need to be more careful. In these groups, very high ketone levels could lead to diabetic ketoacidosis, a dangerous situation caused by a lack of sufficient insulin.

How do you know when your body is in ketosis?

There are a few indications that you might be in ketosis:

  • Reduced appetite and improved energy
  • Increased thirstiness and urination
  • Ketosis breath and dry mouth or a metallic taste in the mouth

If you experience some of these signs and symptoms, you should measure your level of ketosis by using urine strips, breath analyzers, or blood meters.

Is it safe to do the keto diet?

A keto diet is usually very safe. However, three conditions are considered bad for the keto diet: when you have diabetes and you take medications like insulin, when you’re on medications for high blood pressure, and if you are breastfeeding. If you want to go on a keto diet, some modifications of the diet can be made to do it safely.


People who are overweight and obese, have diabetes, or are looking to improve their metabolic health may experience great benefits from adhering to the keto diet plan. At the same time, it may be less useful for professional athletes or bodybuilders wishing to add vast amounts of muscle or weight. Nevertheless, as with any diet, it will only work for people who are consistent and stick to the keto menu for an extended period of time.

You may also like

Leave a Comment