Brain scans combined with artificial intelligence (AI) have led to an important breakthrough in categorizing depression into six unique types. As part of a study led by researchers at Stanford Medicine, California, published this month in the Nature Medicine journal, subtypes or “biotypes” of depression have been identified. The findings can pinpoint treatments that are more or less likely to be effective for an individual based on the type of condition they have. The team of scientists which included members from the University of Sydney used data from 801 people with depression and anxiety.