Scientists have found that the spread of breast cancer accelerates during sleep

Scientists have found that the spread of breast cancer accelerates during sleep

The scientific community believed that breast tumors continuously release metastatic cells, but a Swiss scientific team found that cancer cells that circulate and later form metastases occur mainly during the sleep phase.

This is the main finding of a study of 30 patients and mouse models published in the journal Nature, led by researchers from the École Polytechnique Fédérale (ETH) in Zurich, the University Hospital of Basel and the University of Basel.

Breast cancer is one of the most common forms of cancer, according to the World Health Organization (WHO). Every year, about 2.3 million people get the disease worldwide.

If doctors detect cancer in time, patients usually respond well to treatment. However, things become much more difficult if the cancer has already metastasized, reminds ETH.

Metastases occur when circulating cancer cells separate from the original tumor, travel through the body through blood vessels and form new tumors in other organs.

According to those responsible for the work, previous cancer research has not paid much attention to this issue when tumors release metastatic cells.

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