An longitudinal study of people who participated in Vasloppet, the world’s largest long-distance ski-race, held in Sweden showed that those participating in the race have lower incidence of bipolar disorder compared to the general population. However, when performance in the race was considered, high performance women had higher risk of bipolar disorder than slower skiing women. This association was not found in men. The study was published in the International Journal of Bipolar Disorders. Bipolar disorder is a complicated diagnosis. Its key feature are mood swings ranging from severely depre…
