Researchers had long assumed that metastasis was a process that operates continuously, and so little attention had been focused on when tumours shed cancer cells.
However, a new study by researchers in Switzerland has found that metastasis occurs more effectively at a particular point in the day or, rather, our daily circadian rhythms.
Molecular oncologist and lead author Professor Nicola Aceto of ETH Zürich said: “When the affected person is asleep, the tumour awakens.”
In their study, Prof. Aceto and her team worked with both 30 women with breast cancer, as well as mouse models of the disease.
Article source: https://www.express.co.uk/news/science/1629771/breast-cancer-spreads-night-new-warning-millions-britons-over-disease-metastasis