The study links it to better metabolic health. Did you assume it meant worse?

I think they're saying that coffee is a healthier habit than soda.

Yes, my inference was "people consume caffeine, and if one group is getting it from coffee, the other group is getting it from non-coffee, mostly (highly-caloric) soda water, which explains why the coffee side looks healthier."

	▲	nazgul17 9 hours ago \| parent [-]
		Makes sense, but I would hope the study design controlled for this, or designed around it.