Data, if it is actual cause of death data— WOULD NOT “suggest’ it would be stated as a clinical health data fact.
Which this ‘data’ is not factual whatsoever. Cause of death data for this time period would take some time to be collected and categorized for one. And unlikely, #2.
The temps don’t support the “data”.
Look at the temps for the time mentioned— Wales and Ireland, which are at Wales Lat approximately 52.469° N. Ireland n and s Lat between 51° and 56° N latitude
Wales shares latitude with cities like Berlin, Germany, and Dublin, Ireland, and across the Atlantic with cities like Seattle, Washington, and parts of southern Canada not known for heatwaves.
Interesting overlay:https://brilliantmaps.com/cities-transposed-latitude/
very interesting, I’m at the same latitude as my welsh ancestors, but the temp here today is approaching 90 in this inland city. I wonder how my daughter’s welsh corgis are doing today in the heat.