This Vaccine is Quietly Doing Something to Your Heart

In 2023, a Stanford researcher named Pascal Geldsetzer was looking at the way Wales had rolled out the shingles vaccine a decade earlier — and he noticed something peculiar. To ration the limited supply, Welsh health authorities had drawn a line in the sand: if you were 79 on September 1, 2013, you qualified. If you'd already turned 80, you didn't [1]. Two people, born a week apart. Same town.…