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Heatwave Food Safety: Beat Food Poisoning
10 Apr
Summary
- Warm weather accelerates bacteria growth, increasing food poisoning risk.
- Food poisoning can lead to long-term IBS and gut sensitivity issues.
- Simple precautions protect gut health during heatwaves.

Warm weather presents an elevated risk of food poisoning, according to consultant dietician Kirsten Jackson. She advises extra caution for outdoor dining, such as picnics and barbecues, as rising temperatures can significantly speed up the multiplication of harmful bacteria in food. This rapid bacterial growth is a primary concern for public health during heatwaves.
The consequences of food poisoning may extend beyond short-term discomfort. Jackson explains that some individuals can develop post-infectious IBS, a condition where the gut remains sensitive long after the initial infection has passed. This chronic sensitivity can manifest as persistent bloating, diarrhea, and unpredictable bowel habits, impacting the gut microbiome and brain-gut communication.
Simple preventative measures are recommended to mitigate these risks. Raw meats should be kept refrigerated until just before cooking. Cooked foods that are not immediately consumed should be promptly stored in containers in the fridge. While leftovers can typically be kept for up to four days, prioritizing safety and discarding food if in doubt is advised to protect both immediate health and long-term gut well-being.