Doctor shares major heatwave sleeping mistake many are making

Doctor shares major heatwave sleeping mistake many are making The UK is bearing the brunt of a brutal heatwave with the Met Office issuing red alerts Trying to get a decent night's sleep during a 35C heatwave can feel virtually impossible for many households, with sweltering overnight temperatures and sheer discomfort driving people towards quick solutions. One of these is using electric fans. However, experts have cautioned that one of the most widespread heatwave sleep habits may not be as innocent as it appears. The warning comes as the Met Office has issued rare red-level heat alerts for parts of the UK, indicating a risk to life and considerable disruption as temperatures soar into the mid-to-high 30Cs in certain areas. Night-time temperatures are also staying unusually elevated in some regions, placing further pressure on sleep as buildings hold onto heat absorbed throughout the day and offer little in the way of natural cooling. According to a doctor speaking to Kool FM, leaving a fan on all night could aggravate symptoms for some allergy sufferers by pushing dust and other particles around the bedroom. Dr Naheed Ali warns that the continuous airflow produced by a fan can disturb settled dust, potentially irritating the eyes, throat and nasal passages of those who are sensitive to allergens. The NHS notes that conditions such as hay fever can be triggered or made worse by exposure to airborne particles including pollen, dust and pet dander, which may be more pronounced in enclosed indoor spaces during the warmer months. Health specialists also point out that the moving air produced by a fan can have a drying effect in the room, which may cause some people to experience discomfort in the nose and throat during the night, especially where air conditioning or ventilation is restricted. The UK Health Security Agency has previously cautioned that hot weather itself can seriously hamper sleep quality, as elevated overnight temperatures make it more difficult for the body to regulate its core temperature and achieve restful sleep. Studies referenced by the Sleep Foundation indicate that cooler surroundings generally promote better sleep quality, though excessive airflow or environmental irritants can reduce comfort for those with respiratory sensitivities. While fans continue to be a widely used and affordable means of coping with extreme heat, experts emphasise that their impact can differ depending on personal sensitivity, room cleanliness and existing respiratory conditions. Practical guidance from health authorities includes ensuring bedrooms are well-ventilated before going to bed, keeping dust levels down through regular cleaning, and opting for lighter bedding to help manage body temperature on hot nights. As the UK continues to endure lengthy spells of extreme heat, officials say that maintaining good sleep quality is becoming ever more crucial for health and wellbeing, particularly for those who are vulnerable to heat stress or respiratory irritation.