Background: Fatigue can be a disabling multiple sclerosis (MS) symptom with no effective treatment options.
Objective: Determine whether a low-fat diet improves fatigue in people with MS (PwMS).
Methods: We conducted a 16-week randomized controlled trial (RCT) and allocated PwMS to a low-fat diet (active, total daily fat calories not exceeding 20%) or wait-list (control) group.