The ketogenic diet has become popular in recent years, especially among those looking to lose weight quickly and improve their energy levels. This diet relies on cutting back drastically on carbohydrates and increasing healthy fats, forcing the body to switch its primary energy source from glucose to fat.
Ketogenic diet
The idea behind this diet originated for medical purposes, as it was used to treat certain types of epilepsy in children before later becoming one of the most popular diets for weight loss and overall health improvement.
How does the keto diet work?
Usually, the body uses carbohydrates like bread, rice, sugar, and pasta as its main source of energy. These carbohydrates are converted into glucose, which the body uses for movement and vital functions. However, in the keto diet, these carbohydrates are drastically reduced, causing a decrease in the body's available glucose.
As this happens, the liver starts to convert fat into small molecules known as ketones, which the body can use as an alternative source of energy. This state is called ketosis, which is the basic principle of the keto diet.
Foods allowed on the keto diet
This diet relies on foods rich in fats and proteins, with a severe reduction in carbohydrates. Some of the most prominent allowed foods include:
All types of meat, such as chicken and red meat
Fish and seafood
Eggs
Avocados
Olive oil and coconut oil
Nuts, such as almonds and walnuts
Some full-fat dairy products
Foods to avoid or limit
Conversely, there are a number of foods that should be reduced or completely avoided, such as:
Bread and pastries
Rice and pasta
Sugar and sweets
Juices and soft drinks
Sugar-rich fruits, such as bananas and grapes
Processed foods and fast food
Benefits of the ketogenic diet
One of the most important benefits of this diet is that it may help with weight loss, as the body begins to rely more heavily on fat for energy. Also, reducing carbohydrates may help some people feel less hungry and consume smaller portions.
Some studies also suggest that this diet may help improve blood sugar control in people with insulin resistance, making it a potentially important option in certain health conditions under medical supervision.
Additionally, the ketogenic diet may help improve mental focus in some people after the adaptation period, as the brain becomes more accustomed to using ketones as an energy source.
Potential side effects and problems
Despite its potential benefits, the ketogenic diet can cause some side effects, especially at the beginning, as the body goes through a transitional phase sometimes known as the keto flu. This can include symptoms such as headaches, fatigue, dizziness, and nausea.
Severely reducing carbohydrates can also lead to inadequate fiber intake, causing digestive issues such as constipation. Furthermore, prolonged adherence to a very restrictive diet can lead to inadequate intake of some essential vitamins and minerals if the diet is not carefully planned.
Effect of keto on the body
When the body enters ketosis, its primary energy sources change. Initially, you may experience fatigue or a decrease in physical performance, but after a period of adaptation, your body may become more efficient at using fat and ketones for energy. This phase varies from person to person depending on lifestyle and adherence to the diet.
Some people notice an improvement in focus and energy, while others may find it difficult to continue due to the restriction of carbohydrate-rich foods.
Daily follow-up
The success of the ketogenic diet depends on adhering to a very low carbohydrate intake and choosing appropriate sources of fats and proteins. It is also important to choose nutritious foods and avoid relying heavily on highly processed products.
It is also recommended to drink plenty of water to support hydration, along with incorporating low-carbohydrate vegetables such as spinach, lettuce, and cucumber. Light physical activity, such as walking, can support overall health while following the diet.