Yeah, without diving back into it myself right now, the health effects of caffeine are quite different depending on a single SNP. For fast metabolizers some doses of caffeine above 300mg/day can actually have net positive effects on cardiac health, while the opposite is true for slow metabolizers. I got into a habit of 400mg+ doses per day and the cumulative effect that had on sleep quality alone was a good reason to find an alternative.

I completely agree with your comments about looking for opportunities to use medication to bootstrap into better habits around exercise, mindfulness, and building better systems and habits.