diseases such as multiple sclerosis often differs in men and women," adds Elisabeth Traiffort, research director at Inserm . The researcher concludes with an optimistic one: "Our results open the way to new therapeutic perspectives and could also be beneficial for research on psychiatric diseases or cognitive aging. " is the subject of many mysterious hypotheses. This is particularly the case in sport, where this hormone is a controversial subject. How does affect sports practice, muscle growth and physical abilities in general? Is it possible to increase your level to be more fit, muscular or faster? This article .