Why are we constantly tired: what is really happening in the body

Chronic fatigue is not just a consequence of not getting enough sleep or being nervous a lot. It is a condition that develops slowly: over months, sometimes years. Modern science shows that the cause is much deeper – in metabolic processes that gradually get out of balance.

The first important mechanism is the work of mitochondria. These are small “power plants” inside our cells. They produce ATP – the main energy on which the whole body works. When mitochondria are depleted, the body goes into economy mode: it is harder for us to think, we feel lethargic, we have no strength even for the usual things. Constant stress, toxins, a deficiency of minerals and vitamins – all this slowly “slows down” their work.

The second important factor is silent, hidden inflammation. It does not hurt and does not give bright symptoms, but constantly forces the immune system to work hard. Because of this, the body spends energy not on recovery, but on “extinguishing” internal inflammation. Studies show that people with high levels of C-reactive protein are more likely to suffer from fatigue, brain fog, and decreased concentration.

The third reason is the connection between the gut and the brain. When the microbiota is disrupted, the brain receives alarm signals through the vagus nerve. This can cause increased anxiety, poor sleep, mood swings, and a feeling that your head is “not turning on.” This is why the state of your digestion has such a strong impact on your clarity of thought.