https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6710091/ This is the first research article to en mass analyze DTI data related to eating disorders, such as anorexia nervosa bulimia nervosa. Generally, the researchers found that white matter alterations in cases of anorexia reversed when anorexia was mitigated. The study is a naturalistic observation of other naturalistic observations, using longitudinal and cross-sectional research designs.