Sleep problems may be doing more than leaving people tired during the day. New research suggests that poor or irregular sleep could significantly increase the risk of developing cancer before the age of 50.
The findings were unveiled at a major cancer conference in the United States, where researchers highlighted growing evidence linking sleep disorders to the rise in early-onset cancers worldwide.
Cancer cases rising among younger people
Over the past three decades, cancer diagnoses among younger adults have increased at an alarming rate.
According to data presented by researchers, approximately 1.82 million cases of early-onset cancer were recorded globally in 1990. By 2019, that number had climbed to 3.26 million, representing an increase of nearly 80%.
During the same period, cancer-related deaths among people aged 40 and younger rose by 27%, raising concerns among health experts about the factors driving the trend.
US study points to sleep disorders
Scientists are still investigating the exact causes behind the increase in cancer cases among younger adults. However, a new study conducted by the renowned MD Anderson Cancer Center in Houston has identified sleep disorders as a possible contributing factor.
The findings were presented at the annual meeting of the American Society of Clinical Oncology, one of the world's largest cancer conferences.
Researchers examined medical data from more than 18 million individuals aged between 18 and 50 across the United States.
Higher cancer risk linked to insomnia
The study found that people suffering from insomnia, insufficient sleep or irregular sleep-wake schedules faced a noticeably higher risk of developing cancer at a younger age.
One of the most striking findings showed that individuals under 50 diagnosed with insomnia had up to a threefold greater risk of developing cancer within the following five years compared to the general population.
Researchers said the association remained significant across different sleep-related conditions, suggesting that sleep health may play a more important role in cancer prevention than previously understood.
More research still needed
While the findings point to a strong connection between sleep disturbances and cancer risk, scientists cautioned that further studies are required to better understand the biological mechanisms behind the link.
Researchers emphasized that the results do not prove that poor sleep directly causes cancer, but they do highlight sleep as a potentially important factor that deserves greater attention.
Health experts say quality sleep is essential for maintaining physical and mental well-being. The new findings suggest that regular and sufficient sleep may also contribute to reducing the risk of serious diseases.
As scientists continue investigating the causes of rising cancer rates among younger adults, maintaining healthy sleep habits could become an increasingly important part of long-term disease prevention strategies.
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