Circadian Rhythm of Cardiovascular Disease: The Potential of Chronotherapy With Aspirin

Front Cardiovasc Med. 2019 Jun 20;6:84. doi: 10.3389/fcvm.2019.00084. eCollection 2019.


Almost all the systems in our body adhere to a daily 24 h rhythm. The cardiovascular system is also affected by this 24 h rhythm. In the morning there is a change in various cardiovascular processes, including platelet aggregability. These changes may play a role in the relative excess of early morning cardiovascular events. The number of recurrent cardiovascular diseases (CVD) could, in theory, be reduced by responding to this 24 h rhythm with timed medication intake (chronotherapy), which also applies to aspirin. Multiple studies on chronotherapy with low-dose aspirin are promising, showing a decrease in early morning platelet activity with evening intake compared with morning intake. However, in order to further demonstrate its clinical impact, randomized trials with cardiovascular events as a primary outcome are needed. This review discusses the available evidence of the effects of circadian rhythm on CVD and the potential positive effect of chronotherapy with aspirin.

Keywords: aspirin; cardiovascular disease; chronotherapy; circadian rhythm; platelet aggregation.

Publication types

  • Review