They work on that group because (as the article says) they show increased aging relative to a normal group, making it easier to detect effects in a relatively short running study.

Why the sad face?

> howunfortunate

I have never seen a user name better fit a hacker news comment.

This also perfectly sums up the whole emotional roller coaster of modern science communication.Oh that could be cool (title)... Hey this might be good work... Fuck thats depressing I will never get this time back.