Dr. Eric Berg named the most common causes of chronic fatigue and lack of energy. Such a condition can be a symptom of a dangerous illness.
The first and most important thing to do when you feel constant fatigue is to remember when it started. And then analyze what preceded this state. Then you will understand what your fatigue is connected with – nutrition, stress or some other factors.
“One of the causes of fatigue is taking certain medications, many of which have side effects. Many people on medication feel tired and don't understand what's wrong. In fact, I don’t know of a single drug that doesn’t cause fatigue, lethargy or a decrease in energy levels, ”the expert says.
In particular, antidepressants, tranquilizers and drugs for high blood pressure differ in this effect. Discuss this with your doctor. If the solution to one problem creates another problem, then it is the wrong solution.
The second reason is the “fuel” that you fill your body with. That is food. When burning fat, we have a lot of energy; when burning sugar, we have a lot of energy, sometimes a little. What you eat? Are there healthy saturated fats in your diet? Is there enough protein on the menu? Or are there solid carbohydrates, that is, sugar?
Eat more protein foods and cut carbohydrates, especially fast ones (sweets, starchy foods). And the energy will quickly return.
Factors that reduce immunity to covid-19 are named
The third reason is poor sleep. This is an important factor. If you don't feel energized in the morning, it might be your stress level. Sometimes the cause of insomnia is a lack of vitamin D and zinc. Tip: Take these vitamins right before bed. And your sleep will improve.
The main causes of chronic fatigue are named
The fourth reason is a latent infection. Very often, constant fatigue occurs precisely against this background. Viruses usually go dormant and then reactivate, triggered by stress or other factors. 
Eric Berg Health Expert keto diet specialist, intermittent fasting specialist