Dr Amir Khan, a GP and regular contributor to ITV's Good Morning Britain and Lorraine, has highlighted five health conditions that can be exacerbated by the ongoing UK heatwave. In a TikTok video, he urged those with these conditions to take extra precautions as temperatures soar.
Asthma and Lung Conditions
Dr Khan explained that hot air can irritate the airways, while higher levels of pollution and pollen during warm weather can trigger symptoms. He advised: "If you have asthma or COPD, make sure you're taking your preventive inhalers regularly and routinely. And always carry your inhalers with you just in case."
Heart Disease and High Blood Pressure
Hot weather can cause blood vessels to widen to help cool the body, potentially dropping blood pressure and making some people feel dizzy or faint. The heart also works harder to maintain a cool body temperature. Dr Khan recommended staying well hydrated, avoiding strenuous activity during the hottest part of the day, and taking things slower than usual.
Diabetes
Heat can affect blood sugar levels and alter how insulin is absorbed, according to Dr Khan. Dehydration can make glucose levels harder to control. He advised: "Drink plenty of fluids. Monitor your blood sugars more closely if you normally do, and store insulin according to the manufacturer's instructions. Don't let it get too hot."
Kidney Disease
Dehydration from sweating can worsen kidney function, as kidneys rely on adequate fluid to work properly. Dr Khan noted this is particularly important for older individuals or those taking water tablets. He recommended sipping water throughout the day rather than waiting until feeling thirsty.
Migraine and Headaches
Heat and dehydration are major headache triggers. Dr Khan advised those prone to migraines to stay cool, drink plenty of water, and not skip meals, as low blood sugar can also contribute.
Bonus Warning: Medications
Dr Khan added a bonus warning that certain medications, including water tablets, some antidepressants, and some antihistamines, can make individuals more vulnerable to heat.
General Advice
Concluding, Dr Khan said: "The key message is stay hydrated, stay in the shade during the hottest part of the day, always wear your SPF, keep your home cool if possible, and check in on older relatives, neighbours, and anyone with long-term health conditions that you might be worried about. Stay safe and, obviously, enjoy the sunshine sensibly."
