An oncologist has issued a warning that a common hot weather symptom could be a sign of cancer, urging people not to overlook it. Dr Jiri Kubes, medical director at Proton Therapy Centre, explained that night sweats, while often benign, can occasionally be linked to serious conditions such as blood cancers.
What Are Night Sweats?
Night sweats refer to excessive sweating during sleep, which can soak clothing and bedding. While this is normal in hot weather or due to hormonal changes, infections like flu, or menopause, persistent episodes may warrant medical attention.
When Night Sweats Could Signal Cancer
Dr Kubes stated: "Most night sweats are not caused by cancer, but persistent or drenching sweats that continue over time without a clear explanation should always be properly assessed." He highlighted that certain cancers, particularly lymphomas, can trigger inflammatory chemicals affecting the body's temperature regulation, leading to severe night sweats.
"With certain cancers, the body produces inflammatory chemicals that can affect temperature regulation. This can lead to episodes of significant sweating during the night, sometimes enough for people to wake up with soaked clothing or bedding," he added.
Why Night Sweats Are Often Overlooked
According to Dr Kubes, many people dismiss night sweats as a result of stress, menopause, poor sleep, or room temperature. "People often try to explain it away for months before seeking medical advice. It's usually the persistence of the symptom that becomes concerning rather than a single isolated episode," he said.
Other Cancer Symptoms to Watch For
Night sweats become more alarming when accompanied by other signs such as unexplained weight loss, persistent fatigue, swollen lymph nodes, or recurring fevers. Cancer Research UK lists general cancer symptoms including:
- Fatigue
- Unexplained bleeding or bruising
- Unexplained pain or ache
- Unexplained weight loss
- An unusual lump or swelling anywhere
When to Seek Medical Advice
Dr Kubes advised: "If someone is experiencing regular drenching night sweats, particularly if they are waking repeatedly or noticing other symptoms, it's important to speak to a doctor. It may turn out to be something minor, but it's always better to investigate persistent changes in the body."
The NHS recommends getting checked by a GP if you regularly wake up with soaking wet sheets. If you experience any unexplained symptoms, consult your doctor promptly.
