Study: Irregular sleep schedule boosts risk of cancer

Study: Irregular Sleep Schedule Boosts Risk Of Cancer

There is growing scientific evidence of the toll insufficient sleep can take on one's health.

According to a recent study, having an irregular sleep schedule has shown to increase the prevalence of cancer—particularly breast cancer—in mice.

As a result, the team is advising higher-risk women to abstain from working certain types of jobs.

One researcher cautioned, "If you had a situation where a family is at risk for breast cancer, I would certainly advise those people not to work as a flight attendant or to do shift work."

To arrive at these results, breast cancer-prone mice were subjected to a weekly 12-hour delay in their circadian body clocks for an entire year.

Whereas it typically took more than 50 weeks for cancer tumors to appear, this group developed them eight weeks sooner.

For predisposed women, the timeline is estimated to be accelerated by about five years.

Mouse subjects whose sleep was disturbed also showed a consistent pattern of increased weight, averaging about 20 percent more than the control group despite food amounts being the same.
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