Genetics links.

 https://pubmed.ncbi.nlm.nih.gov/22934640/

 https://www.inverness-courier.co.uk/news/local-beer-to-help-the-environment-287264/

 https://www.msn.com/en-us/health/other/why-does-an-irregular-heartbeat-show-up-40-years-early-for-some-people/ar-AA298F6A