A Facebook Reel says a “horrifying Japanese study” of 18 million vaccinated people proves “the more doses you get, the sooner you die.”

PBC got the study and read it.

The study is real: Iwamoto et al., Frontiers in Public Health, 2026, DOI 10.3389/fpubh.2026.1795437. It analyzed registry data from two Japanese municipalities and found age-specific all-cause mortality patterns across COVID booster dose groups.

But the Reel overstates it.

The paper does NOT simply say every extra dose makes everyone die sooner. Older adults with higher dose counts had lower all-cause mortality. Younger adults receiving 5+ doses and ages 50–64 receiving six doses showed higher all-cause mortality, but the authors repeatedly say the analysis is exploratory and cannot prove causation because key data were missing.

Read the PBC report and download the study PDF:
https://purebloodcanadians.com/blog/japanese-booster-dose-mortality-study-facebook-reel-source-check.html

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