A friend asked me to investigate whether someone getting into astrology makes them more likely to get into more harmful pseudosciences such as alternative medicine.

This market will resolve whenever I've gotten around to doing that research. This'll probably be within a few months, but I'm not sure when I'll have the time.

Resolves to YES if I think there's likely an effect there, even a small one. (Needs to be large enough to have some meaningful impact on the world though.) Resolves to NO if it looks like there's no effect, or if I'm unable to find any significant evidence that points one way or the other.

A correlation of "people who believe in astrology are more likely to believe in alternative medicine" is not enough; it needs to be causal. The discussion that prompted this was about whether attempting to get people to stop believing in astrology is an effective way to prevent the growth of alternative medicine.

I'll read through any studies posted in the comments here, so feel free to try to influence the results by posting relevant links.