Teenagers and young people in their 20s, 30s and 40s in the U.K. are dying from rapidly metastasizing and terminal cancers at an unprecedented rate since mass COVID-19 vaccination began, according to a new analysis by Edward Dowd.

The 45-page report by Dowd, a former Wall Street hedge fund manager and author of “‘Cause Unknown’: The Epidemic of Sudden Deaths in 2021 and 2022,” alarmed some oncologists who characterized it as a sharp reversal of decades of mortality data.

Dowd based his analysis on readily available government statistics from the U.K.’s Office for National Statistics.