A doctor has issued a health warning for millions of people in the UK taking common antidepressants, as soaring temperatures increase the risk of dehydration and heat exhaustion. The UK is experiencing a significant north-south divide, with temperatures reaching 32C in the southeast while the north faces rain and cooler conditions around 14C.
Heat Health Alert in Effect
An Amber Heat Health Alert is active across England as a strong summer heatwave intensifies. The Met Office predicts settled weather from the weekend as high pressure builds from the south, bringing sunny spells and temperatures well above the June average.
SSRI Users at Higher Risk
Selective Serotonin Reuptake Inhibitors (SSRIs), prescribed to approximately 8.7 million people in the UK from 2023 to 2024, are used to treat mental health conditions by boosting serotonin levels in the brain. Dr. Rupa Parmar, GP and Medical Director at Midland Health, explains that excess sweating is a common side effect due to the medication's impact on the hypothalamus, which regulates body temperature.
"Excess sweating can cause dehydration and increase the risk of heat exhaustion, as heat tolerance is lowered," Dr. Parmar said. Symptoms of heat exhaustion include headaches, nausea, dizziness, weakness, irritability, and elevated body temperature.
Recognising and Responding to Heat Exhaustion
Dr. Parmar emphasises the importance of recognising symptoms: "If someone experiences heat exhaustion, move them out of the heat, keep them hydrated, and use cold compresses to cool down." Heatstroke, a more severe condition where the body cannot regulate temperature, can lead to organ damage. Symptoms include confusion, seizures, rapid heart rate and breathing. Unlike heat exhaustion, which subsides within 30 minutes, heatstroke requires immediate medical attention.
Tips for Staying Safe in Hot Weather
To combat dehydration, Dr. Parmar recommends drinking at least three litres of water daily. Avoid caffeine and alcohol, which increase urine production. Limit sun exposure, especially during peak hours, and wear loose-fitting, breathable fabrics like cotton and linen. Cold compresses on the forehead and neck can help cool down.
For those experiencing night sweats or hot flushes, keep windows, blinds, and curtains closed during the day to block heat, and open them at night. If room temperature is below 35C, a fan can be used. Limit use of heat-generating appliances like ovens and washing machines.
Dr. Parmar advises that if excessive sweating interferes with daily life, the antidepressant may not be the right fit. SSRIs are not one-size-fits-all, and finding the right medication takes time. Never stop medication without consulting a doctor, and report any worrying side effects to your GP.
