Insomnia triples early‑onset cancer risk in under‑50s
SkimNews Take
The studies' findings suggest that the body's repair mechanisms, typically active during sleep, may be insufficient to counteract cellular damage accumulated through modern lifestyles, contributing to earlier cancer onset.
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- MD Anderson Cancer Center led two U.S. studies that examined health records of more than 18 million adults aged 18‑50.
- Insomnia was linked to up to a three‑fold higher risk of developing cancer within five years among people under 50.
- Early‑onset cancer cases worldwide rose from 1.82 million in 1990 to 3.26 million in 2019, while deaths among those in their 30s‑40s increased 27 %.
- Claire Coughlan of Bowel Cancer UK said the findings add a possible modifiable risk factor but noted genetics and lifestyle also play roles.
- Dr David Garley warned that the association might reflect broader unhealthy habits—like drinking, obesity, and smoking—rather than sleep alone.
Why it matters: Patients under 50 could reduce cancer risk by improving sleep, while clinicians gain a new modifiable factor for early‑onset cancer screening, potentially lowering the 27 % rise in deaths among this age group.
