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Peppermints Could Help You Stay Sharp When You Have a Cold, Cardiff Study Suggests

The study monitored 81 students over 10 weeks and found peppermint sweets improved alertness in 17 participants with mild colds, easing malaise symptoms, researchers said.

  • Newly published Cardiff University research found sucking a peppermint sweets increased alertness in people with the common cold, the study published in the World Journal Of Pharmacy And Pharmaceutical Sciences says.
  • Because colds slow psychomotor speed and alertness, Scientists at Cardiff University tested whether peppermints could remove mood and performance impairments caused by the common cold.
  • They monitored 81 students over 10 weeks, with 17 participants developing mild illness; ill participants received six peppermint, six butterscotch, and five no sweets, while 64 healthy controls were split 21 peppermint, 22 placebo, and 21 none.
  • Despite increased alertness, the study found no significant effects of sucking a peppermint on performance, while Dr Andy Smith linked peppermints to soothing signals that eased malaise.
  • Vapours and aromatics have prior evidence of benefit, and researchers say simple remedies like eating a peppermint can improve wellbeing when unwell.
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These common sweets could benefit anyone suffering with a cold, research suggests

Scientists have done some research which suggests sucking on peppermints could help improve alertness for anyone with the common cold.

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The Independent (US) broke the news in United States on Monday, October 13, 2025.
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