Bright Side made a list of diseases, the main symptoms of which include constant fatigue. Read and stay healthy!
Iron deficiency (anemia) is characterized by a decrease in hemoglobin production. Cells don't receive enough oxygen, and this causes permanent fatigue.
Other symptoms:
In the initial stages, you can fix the situation by increasing the amount of iron-rich foods in your diet. Champions for iron content are clams, meat, variety meats, and pulses (see other products here).
Source: Mayo Clinic
Fatigue is one of the first signs of a vitamin B12 deficiency. This element is found only in products of animal origin, so vegetarians are the first to be at risk.
Other symptoms:
With a lack of vitamin B12, changes in nutrition can help only if you have really refused meat for some period of time (for example, you kept to a diet). In all other cases, you should take a synthetic analog, the correct dose of which will be prescribed by a doctor.
Source: Health
An underactive thyroid (hypothyroidism) is characterized by a lack of thyroid hormones and is accompanied by fatigue.
Other symptoms:
This condition can be fixed by the intake of synthetic hormones.
Source: Mayo Clinic
With bowel dysfunction, the amount of harmful bacteria in it is greatly increased. When these microorganisms die, they secrete a toxin that negatively affects the nervous system, causing fatigue.
Other symptoms:
The treatment depends on which disease (it can be dysbacteriosis, irritable bowel syndrome) has violated the intestine's normal functionality.
Source: NCBI
Adrenal fatigue is an overabundance of adrenaline in the blood. This hormone is produced in stressful situations and is beneficial in small doses, but its overabundance makes you feel shattered.
Other symptoms:
Adrenaline bursts cannot be excluded from real life. Yet there are things that help you cope with stressful situations better: sound sleep, a balanced diet, walking outdoors, sports.
Source: Mayo Clinic
The most common liver diseases accompanied by fatigue are hepatitis A and B. Fatigue can also be a sign of a violated outflow of bile, inflammation of the bile ducts, or liver cirrhosis.
Other symptoms:
In this case, special drugs (and in some cases even surgery) are obligatory.
Source: NCBI
Chronic dehydration isn't as evident as acute dehydration, so we often ignore it. The constant shortage of water entails many problems, including permanent fatigue.
Other symptoms:
To test your body for dehydration, pinch the skin on the outer side of your wrist with two fingers, pull it half a centimeter, and then release. The skin should completely smooth and return to its original state in 1-2 seconds.
You can get rid of chronic dehydration by increasing the amount of consumed liquid (from 1.5 to 2.5 liters (50 to 67 fl.oz), depending on your weight).
Source: ehealthstar
If constant fatigue and other symptoms don't disappear after several weeks, don't waste your time - consult a doctor because the success of any treatment depends on how early it was started.