No, you can't just reverse the causal effect by guessing the bias caused by reverse causality :-) If what you say is true (studies tend to try to account for t

No, you can't just reverse the causal effect by guessing the bias caused by reverse causality :-) If what you say is true (studies tend to try to account for these things, e.g. they can show that the effect of sitting exists even after accounting for exercise/activity on the job) then the correct interpretation is that we don't know the causal effect.