I would guess that his telomere length would have been LONGER three years ago because there would have been many stem cells in crisis with lengthening but damaged chromosomes. But I believe his percentage of critically-shortened telomeres would have been higher (typically in the teens)
This article describes exactly what I’ve been saying for the last 6 years. My book, “Telomere Timebombs: defusing the terror of aging” outlines this exact and obvious conclusion: maintaining stem cell telomere integrity will allow for longer and healthier lives.
I learned today that in 9 months, my January 2014 average leukocyte length decreased 500 base pairs but the Percentage of critically-shortened ones improved from 11.9% to 10.2%.