Barnett and Dobson performed meta-analysis of data about weekly distribution of cardiovascular events and found a slight excess in events on Mondays, more pronounced in men or associated with greater alcohol consumption.¹ However, a debate about the underlying mechanisms is wide open.

The meta-analysis provided little evidence to support the possibility that registration data collection or recording procedures play a significant part in the phenomenon. Another part of the hypothesis lies in regard to increased stress on Mondays, particularly in employed people. A …