Brain cells communicate with one another via special channels where they exchange sodium and calcium ions. Researchers believe that malfunctions in these channels could contribute towards bipolar disorder. Previous studies have painted an unclear picture about the links between genetics and bipolar disorder but an international study of 10,596 people - 4,387 of them with bipolar disorder - pooled data from previous research. It found that the two most significant genes were Ankyrin3 and CACNAIC.
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