Doctor explains why hot weather causes diarrhoea and what you need to avoid

While many Brits are eagerly awaiting the arrival of summer for sun-soaked days and bronzed skin, the warmer weather can also bring some unpleasant side effects - including diarrhoea. But what causes this?

NHS GP Dr Ravina Bhanot explains that during hot weather, we tend to sweat more and become dehydrated as a result. "Having less water running through your digestive system can disrupt your gut and cause stress to the gut lining," she said.

This stress makes the gut 'over-active', leading to looser stools or diarrhoea.

The heat can also cause food to spoil faster, especially if left out for extended periods. Dr Deepali Misra-Sharp said: "In the heat, drink regularly, eat safely, and be cautious with food that's been sitting out."

She recommends staying hydrated as the "most important thing". Those suffering from diarrhoea should stick to bland foods like rice or toast, reports Surrey Live. Dr Misra-Sharp added: "Steer clear of dairy, spicy or oily foods."

Good hygiene is also crucial, particularly washing hands thoroughly after using the toilet or preparing food. However, if symptoms persist for a few days, or if diarrhoea is accompanied by faintness, reduced urination, or blood in the stool, Dr Misra-Sharp advises seeking medical attention from a GP.

Dominika Blonska, a qualified nutrition coach, has offered advice on how to deal with diarrhoea during hot weather. She suggests drinking plenty of water and consuming electrolytes to replace lost minerals.

Additionally, she advises against eating street food in foreign countries, food that has been left out in the heat, and undercooked meat. Blonska also recommends wearing loose clothing to prevent overheating and to make you and your stomach area feel more comfortable.

England is set to experience temperatures of up to 29 degrees this week. Dr Tim Caroe, a medical director in the NHS South East region, said: "We've been forecast some very hot weather over the next few days and would like people to not only enjoy the sun, but also be safe by taking precautions to keep well and avoid putting pressure on services."

Dr Caroe advises staying out of the sun between 11am and 3pm, the hottest part of the day.

He also emphasises the importance of drinking plenty of fluids, applying suncream, and limiting alcohol consumption.

Jason Kelly, Chief meteorologist at the Met Office, predicts Thursday will be the warmest day of the week, with temperatures "climbing notably above the seasonal average".