Dr Amir Khan has issued a heatwave warning to individuals with five common health conditions, cautioning that the scorching temperatures could pose serious risks. The UK is currently experiencing temperatures up to 36°C, with the Met Office issuing a red warning for extreme heat on Friday.
Asthma and Lung Conditions
Dr Khan explained that hot weather can irritate the airways, and higher pollution and pollen levels can trigger symptoms. He advised: "If you have asthma or COPD, make sure you're taking your preventer inhalers regularly and always carry your inhalers with you."
Heart Disease and High Blood Pressure
"When we're hot, our blood vessels widen to help us cool down, which can cause blood pressure to drop and make some people feel dizzy or faint," Dr Khan said. "Your heart also has to work harder. Stay hydrated, avoid strenuous activity during the hottest part of the day, and take things slower."
Diabetes
"Heat can affect blood sugar levels and alter how insulin is absorbed," he warned. "Dehydration can make glucose levels harder to control. Drink plenty of fluids, monitor your blood sugars more closely, and store insulin according to manufacturer's instructions."
Kidney Disease
"Your kidneys rely on a good supply of fluid. When dehydrated through sweating, kidney function can worsen, especially if you're older or taking water tablets," Dr Khan said. "Keep sipping water throughout the day, rather than waiting until you're thirsty."
Migraines and Headaches
"Heat and dehydration are major headache triggers. If prone to migraines, try to stay cool, drink plenty of water, and don't skip meals as low blood sugar can also contribute," he added.
Medications and Heat
Dr Khan noted that certain medications, including water tablets, some antidepressants, and some antihistamines, can make people more vulnerable to heat. "The key message is stay hydrated, stay in the shade during the hottest part of the day, always wear SPF, keep your home cool, and check in on elderly relatives and neighbours with long-term conditions," he concluded.
