Everyone feels … 10 serious symptoms of a B1 deficiency


Vitamin B1 or thiamine is one of the eight essential B vitamins that the body needs, and which has many important functions within the human body.

Almost all cells of the body use vitamin B1, which is responsible for converting food into energy, and because the human body is unable to produce thiamine, the deficiency of this vitamin is dangerous for cells and the functioning of the internal organs.

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And the “healthline” website that specializes in medical affairs has identified a number of serious symptoms of vitamin B1 deficiency that everyone feels every day without realizing their causes, namely:


It is one of the early and common symptoms of deficiency of vitamin “B1” or thiamine, and scientists believe that thiamine plays an important role in regulating the satiety process and controlling the “center of satiety” in the brain, and the lack of this substance gives a permanent feeling of satiety and fullness, even when the stomach is empty , Which leads to other subsequent problems.


Scientists consider fatigue a mysterious symptom to this day, because there are many reasons that contribute to its occurrence, but they emphasized that thiamine plays a major role in its appearance, especially since thiamine plays a vital role in converting food into energy, it is not surprising that fatigue and lack of energy from Common symptoms of vitamin deficiency.

Mood swings and delirium

Studies have confirmed that nervous mood is one of the first symptoms of thiamine deficiency in the body, and it may happen in days or weeks, and these cases have been documented in some women during lactation periods or others, where vitamin deficiency leads to severe mood swings.

In severe cases, thiamine deficiency can cause Wernik Korsakov syndrome, which involves two types of brain damage closely related to alcohol thiamine deficiency, which is also common in the elderly so some people experience delirium.

Low response

Thiamine deficiency affects the motor nerves directly, and many people neglect this aspect, to exacerbate the problem without realizing it or feeling it, which causes great damage to the nervous system that affects the reactions and motor response of the human being.

Studies have noted low or absent reactions to the knee and ankle, and as the deficiency progresses, this problem is exacerbated, reaching the inability to coordinate muscle and sometimes walking.

Tingling feeling

People often feel a tingling sensation or a “pinpant” sensation in the upper and lower extremities, which is a symptom known as “paresthesia.”

The peripheral nerves that reach your arms and legs depend heavily on the action of thiamine, so severe deficiency causes damage to the peripheral nerves and disorientation, especially at the beginning of symptoms.

Muscle weakness

Studies have confirmed that vitamin B1 deficiency causes persistent muscle weakness, which is one of the most important indicators, especially in the areas of the legs and arms.

The researchers noted that the people who were given the vitamin had significantly improved their muscle abilities.

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Blurry vision

Severe thiamine deficiency causes swelling of the optic nerve, which causes optic neuropathy, which results in blurring or even loss of vision.

Many studies have linked foggy vision and loss of vision with severe thiamine deficiency in the body, and scientists have noticed a significant improvement in vision after giving patients dietary supplements that contain this vitamin.


Most studies were unable to know the true link between symptoms of the digestive system and thiamine deficiency in the body, but most studies indicated a feeling of nausea in most people who had a record of vitamin deficiency.

Low heart rate

Studies have confirmed that low levels of thiamine in the body cause lower heart rates in humans than normal, which causes a permanent feeling of fatigue and dizziness.

Studies applied to rats indicated a significant decrease in heart rates, accompanied by a decrease in the levels of vitamins granted to them.

hard breathing

This symptom is related to the previous symptom, where a low heart rate leads to shortness of breath because the body makes an extra effort to obtain oxygen, and this eventually leads to fluid build-up in the lungs, causing breathing difficulties.

Health experts recommend eating foods rich in Vitamin B1 such as meats, nuts, whole grains, liver, beans and other foods, and they pointed out that there are various factors that help to decrease vitamin levels in the body, such as alcoholism, dialysis, cosmetic surgeries for obesity, and HIV. Acquired, age or old age.

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