The research, which was published in the scientific magazine in EPJ Data Science, examined more than forty thousand posts from 166 people. The results: the more ‘comments’ a photo has, the more likely it is that it was posted by a depressed Instagram user. The research also showed that the opposite seemed to be true for the number of ‘likes’ a photo received. Another noteworthy result: people suffering from depression are less inclined to use a filter than people who are not depressed. Within a group of people suffering from depression, the black and white filter “Inkwell” was popular. With the mentally healthier Instagram users, the most popular filter was “Valencia”.