Causal claim
Lithium Treatment Circadian Rhythm DisruptionThey pull in opposite directions: more cause, less effect. The map scores it at 35% confidence, weighed from 1 article.
Lithium stabilises circadian rhythms and promotes morningness in responders; genetic ease-of-getting-up predicts five-fold odds of good lithium response, tying its efficacy to the clock.
Nothing upstream on the map yet.