Poor sleep linked to rising cancer risk in under-50s
Summary
Two large studies suggest that poor sleep may be linked to the rise in cancer cases among people under 50 worldwide. Researchers found that people with irregular sleep patterns have a higher chance of developing certain cancers, but more research is needed to understand the connection fully.Key Facts
- Early-onset cancer cases rose from 1.82 million in 1990 to 3.26 million in 2019 globally.
- Cancer deaths in people aged 40 and under increased by 27% during the same time.
- Studies analyzed data from more than 18 million adults in the US aged 18 to 50.
- Poor sleep was linked to higher risks of bowel, breast, uterine, and ovarian cancers.
- People under 50 with insomnia were up to three times more likely to get cancer within five years.
- Experts say poor sleep might affect the immune system, which could influence cancer risk.
- Other lifestyle factors linked to poor sleep, like smoking and obesity, may also raise cancer risk.
- More research is needed to confirm if and how sleep problems directly cause cancer.
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