No, but the pills are supposed to give them better ods to live until 2040-2050 where they think the Singularity will allow them to transcend their human bodies.
Other people prefer go and live in Florida or Spain :-)
"no medical studies"? That seems like a very interesting claim, but the article you linked doesn't support it much, instead just listing a few studies which found that specific vitamins failed to improve health in specific areas.
What about the case where someone has an otherwise undiagnosed vitamin deficiency? E.g. B12 supplements to combat the neurological effects (like depression, distractibility) of B12 deficiency?