With the deepening of the crisis, teamwork and shiftwork has become generalised.

Future studies will explore if this sort of shiftwork increases telomere attrition.

Shift work sleep disorder is an extrinsic circadian rhythm disorder, which means that is it caused by external circumstances.

Jet lag, shift work and poor vision can also disrupt melatonin cycles.

Shift work, as well as poor diet, can lead to obesity," said lead researcher Denis Burdakov in a release.