She graduated from I.M. Sechenov First Moscow State Medical University, diploma with honors, in 1993, after that she passed residency and post graduates studies at Endocrinology Scientific Centre, where she started her medical career. Together with medical work in Endocrinology Scientific Centre, she also did a lot of researches and as a result defended first PhD and then Doctoral theses on the “Age Androgen Deficit: Clinical Picture, Diagnostics, Treatment”. This monograph turned out to be a sensation in the world of science and very quickly became a must-have book for andrologists. Professor Kalinchenko gives lectures in the most prestigious and famous medical organizations in Europe and all over the world. Kalinchenko S.J. is the author of more than 120 scientific publications, among them are 4 methodology textbooks for doctors, chapters in monographs “Adiposis”, “Gender correction in Trans-sexuality”, “Small Penis”. She is the author of four monographs: “Problems of Age Androgen Deficit in Men: Clinical Picture, Diagnostics, Treatment”, “Sexual Disorder in Men with diabetes”, “Trans-sexuality”, “Klinefelter syndrome” and a practice direction “Practical Andrology”. Kalinchenko S.J., as a practicing andrology, has worked out and patented a unique method to prevent androgen deficit by stimulating the body to produce more testosterone. In the past, there was only one way to compensate androgen deficit, which was by taking testosterone medicine. Now Dr. Kalinchenko’s method is used by andrologs all over the world. Dr. Kalinchenko is a practicing specialist with more than 15 years of experience in andrology, endocrinology, sexual pathology and is a member of several international medical organizations.