“The fallout from repeated COVID infections poses a growing “existential threat” to human health. 
…
“What the science now says about COVID infections, whether they appear mild or severe: every infection increases the risk for heart attacks, strokes and heart disease; for new-onset diabetes; for cognitive decline and dementia; for deregulating the immune system; and for reactivating viruses like Epstein-Barr or shingles.
…
“‘The science is saying our health is progressively deteriorating,’ says Yaneer Bar-Yam [American scientist and activist specializing in complex systems and an expert in the quantitative analysis of pandemics].”

https://thetyee.ca/Analysis/2025/10/31/Physicist-COVID-Seriously-Enough/