Dented Cans Linked to Deadly Botulism Risk, Doctor Warns

On November 13, 2025, a medical expert issued a grave warning about the health risks associated with consuming food from dented cans. Dr. Ashley Ennedy, a specialist in environmental medicine, explained in a TikTok video that even minor damage to a tin can compromise the airtight seal, allowing the growth of clostridium botulinum bacteria. This bacteria can produce a potent toxin that attacks the nervous system, potentially leading to a rare but life-threatening form of food poisoning known as botulism.

Dr. Ennedy emphasized that the toxin is undetectable by sight, smell, or taste, meaning contaminated food will appear and taste normal. Symptoms of botulism include paralysis, difficulty breathing, and even death in severe cases. The doctor strongly advised consumers to discard any cans that are dented, bulging, or leaking, as the risks are simply not worth taking.

Fortunately, the NHS and health regulations in the UK help mitigate the threat of botulism. Restaurants are prohibited from using any damaged cans, and health inspectors routinely check for such hazards. However, Dr. Ennedy noted that dented tins are sometimes donated to food banks, underscoring the importance of thoroughly inspecting all canned goods, whether at home or in a charitable setting.