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In a viral video, doctor Daniel Tales explains that the continuous flow of air accelerates the evaporation of moisture from the mouth and nose, causing the body to produce more mucus. His recommendation is simple: use the fan in oscillating mode, never fixed and pointed at the body.
A doctor from Minas Gerais warns that sleeping with the fan pointed at the body all night dries out the airways, causes mucus buildup, spreads dust mites, and can even irritate the cornea of the eyes. The warning comes from doctor Daniel Tales, who published a video on the topic on social media.
The content has already surpassed 2 million views. According to the specialist, most people believe they are enjoying a comfortable night under the fresh breeze when, in fact, the continuous flow of wind can affect the airways. According to information released by the NSC Total portal, the doctor explains the mechanism behind the problem, which involves drying out the mouth and nose, increased mucus, and dust blown into the eyes, and gives a simple recommendation to avoid discomfort. He himself emphasizes that this is informative content, which does not replace an individualized medical assessment.
Why direct air dries out the body
According to the doctor, the problem starts with dryness. When a person sleeps with moving air directed at the body, the fan accelerates the evaporation of natural moisture from the mouth and nostrils, leaving the area much drier than normal.
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The body, in turn, reacts to this extreme dryness by entering a sort of defense mode and intensifying mucus production. According to the specialist, this is precisely why so many people wake up congested after a whole night with the equipment on, feeling a stuffy nose even without having a cold. The excess mucus, in this case, is the body’s response to the lack of moisture.
The fan that spreads dust and mites
In addition to drying out the respiratory tract, the fan acts as an unexpected particle collector. The doctor explains that the device not only blows air but also pulls suspended residues in the environment, such as dust, mites, and dead skin cells, throwing all of this directly against the nasal passages while the person rests.
The effect tends to be worse when the environment is not very clean, as there is more material for the device to spread. For those who are sensitive to dust and mites, this constant exposure during the night can worsen allergic reactions and increase mucus already stimulated by dryness, adding up to a night that seems calm but ends with the body on alert. Mites, invisible to the naked eye, are among the main triggers of this type of reaction.
The alert for the eyes and the cornea
The doctor also issues a warning regarding eye health. According to him, many people do not sleep with their eyelids completely closed, which leaves the eyes partially exposed to the airflow and particles carried by the fan.
This fine dust spread by the equipment can cause the user to wake up the next day with red, dry eyes or even with severe irritations in the cornea, the transparent membrane that covers the front of the eye. For those who already feel discomfort or dryness in the eyes in the morning, the habit of sleeping with the fan pointed at the face may be one of the causes to investigate.
How to use the fan without feeling hot
The good news is that the solution does not require turning off the fan or facing a hot night. According to the doctor’s recommendation, the ideal is to set the device to oscillate, never pointed directly at the body.
In this way, the fan performs its correct function of just circulating the air in the environment, keeping the room cool without blowing a constant stream of wind and particles against the face. It is worth remembering, however, that this content is informative and educational and does not replace an individualized medical evaluation, so those with persistent symptoms should seek a qualified health professional.
The warning from the Brazilian doctor Daniel Tales, which has already surpassed 2 million views, is a reminder that a habit as common as sleeping with the fan pointed at the body throughout the night can have effects beyond comfort.
According to him, the continuous airflow dries out the mouth and nose and increases mucus production, the device spreads dust and mites against the sinuses, and the particles can even reach the eyes and irritate the cornea, which would explain waking up congested and with tired eyes.
The suggested adjustment is simple, keep the fan in oscillating mode to just circulate the air, but, as this is informative content and not a consultation, the guidance is to seek a health professional in case of persistent symptoms.
And you, do you sleep with the fan pointed at your body? Have you ever woken up congested or with dry eyes after a night like that? Share your opinion and exchange ideas with other readers about health and sleep quality.
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