Poor sleeping patterns could be a contributing factor to cancer, a new test on mice suggests.

BBC News reports the new research highlights concerns about the detrimental effect shift work may have on an individual’s health.

Researchers warn that though further testing on humans is needed, women with a family history of breast cancer should avoid working shifts that contribute to poor sleep patterns. The study also found that the mice with poor sleeping patterns were 20 percent heavier, despite consuming the same diet as the other mice.

Previous studies in people have indicated that shift workers and flight attendants have a higher risk of diseases like breast cancer.

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Read the article “Irregular Sleeping Patterns Linked To Cancer” on atlanta.cbslocal.com.