According to him, a person should normally sleep at night for seven to nine hours.
During the day, a feeling of constant desire to sleep in a healthy person should not be, the expert emphasized.
“If a person who sleeps a sufficient amount of time at night experiences drowsiness during the day, then this, as a rule, indicates pathological processes in the body or the body's reaction to external factors, such as nutrition, for example.
Sleepiness during the day can be caused by physical overwork, a sedentary lifestyle, the so-called desynchronosis - a state of disruption of circadian rhythms when changing time zones (jet lag),” said the chief physician of INVITRO-Moscow.
Taking strong coffee, tea, alcohol, energy drinks leads to short-term excitation of the nervous system, followed by periods of its reduced activity, he warned.
“Hypovitaminoses B, D, C, iron deficiency cause a feeling of drowsiness.
A number of mental illnesses, such as anxiety, bipolar disorder, depression, can lead to daytime sleepiness, ”the RT interlocutor explained.
As the doctor added, the desire to sleep during the day is caused by hypothyroidism, androgen deficiency, diabetes mellitus, cancer, fibromyalgia, systemic lupus erythematosus, Sjögren's syndrome, multiple sclerosis, as well as various infections, the most common of which are respiratory viral diseases.
“Drowsiness during the day is a non-specific symptom that can indicate a number of serious diseases.
To start looking for the causes, you need to contact a general practitioner or general practitioner, ”advised Khomyakov.
Previously, a somnologist spoke about the impact of lack of sleep on health.