Poor sleep linked to rising cancer risk in under-50s

Worldwide early-onset cancer cases rose from 1.82 million in 1990 to 3.26 million in 2019, and cancer deaths among people in their 40s, 30s, or younger increased by 27%. Two MD Anderson Cancer Center studies analyzed health data for more than 18 million US adults aged 18–50 and found poor sleeping patterns correlated with higher likelihood of early-onset bowel, breast, uterine, or ovarian cancer. In some cases, those diagnosed with insomnia were up to three times more likely to develop cancer within five years. Findings indicate sleep disruption may be a clinically relevant, potentially modifiable risk factor requiring further investigation.

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