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Why Do I Sweat When I Sleep?



Sweating during sleep is a common phenomenon that many individuals experience. Waking up drenched in perspiration can be uncomfortable and perplexing, leading to questions about its causes. This article explores the reasons behind night sweats, shedding light on the various factors that contribute to this phenomenon.


Temperature regulation



One of the primary functions of sweating is to regulate body temperature. As we sleep, our body's internal thermostat attempts to maintain a consistent temperature. During REM (rapid eye movement) sleep, our brain activity increases, resulting in an elevation of body temperature. Sweating is the body's natural response to cool down and maintain homeostasis. Night sweats can occur when this cooling mechanism becomes overactive, leading to excessive sweating during sleep.

Hormonal fluctuations



Hormonal imbalances can also contribute to night sweats. Women going through menopause often experience hot flashes and night sweats due to fluctuating hormone levels, particularly oestrogen. Similarly, hormonal changes associated with certain medical conditions or medications can trigger night sweats in both men and women. Stress may also cause you to perspire during the night. Practising relaxation techniques, such as deep breathing and mindfulness exercises, can help manage stress-induced sweating.

Infections and illnesses

Certain infections, such as influenza, tuberculosis, and HIV/AIDS, can cause night sweats as the body's immune response triggers sweating to fight off the infection. Additionally, medical conditions like hyperthyroidism, diabetes, and certain cancers can be accompanied by night sweats.

Medications and substances



Some medications and substances have been linked to night sweats as a side effect. Antidepressants, hormone therapy drugs, certain blood pressure medications, and opioids are among the substances that may cause sweating during sleep.

Environmental factors

The temperature and humidity of our sleep environment can play a role in triggering night sweats. Sleeping in a room that is too warm, using heavy blankets or bedding, or wearing excessive clothing can lead to excessive sweating. Additionally, certain bedding materials, such as synthetic fabrics, may hinder proper ventilation, trapping heat and causing perspiration. In most cases, making adjustments to your sleep environment, such as ensuring a cooler room temperature, using breathable bedding, and wearing lighter sleepwear, can alleviate night sweats.

Sweating whilst you sleep is a normal bodily process, yet may be a sign of an underlying health issue. It is essential to identify the underlying cause of night sweats to address any potential health concerns. Consulting with a healthcare professional can help diagnose and manage any medical conditions or hormonal imbalances contributing to excessive sweating during sleep.


Contact us today on +356 21221355, 9985 2404 or send an email on info@clinipath.com.mt for more information about our health screening programs




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