In this article the difference between the sexes, knowledge of the anatomy and physiology of the brain and then the . comparison between them . The aim of this article, at first know the differences or natural variations in both sexes of women and men. Through the results, we can build the foundation of medical sciences, such as neurology, psychology, anatomy and physiology
And the discovery of more effective treatments, especially in the case of diseases that vary in intensity between the sexes.  Thus, it was found that there are differences in structure, function and chemistry. With some examples of the disease include or cases differ in the ratio between the sexes. And science progress has been made recently in our understanding of these differences and the implications on the mental diseases such as Alzheimer's, depression, schizophrenia and suicide.