Gynecology is the study of the health care of women, 
including diseases and normal physical care of the 
female reproductive system. Gynecology also involves 
the study of female sexual functioning, as well as 
functioning of the reproductive system and of the 
secretions (substances released) from hormones in the 
female body. Hormones are types of chemicals in the 
body that affect other cells. Someone who practices  
 
Since gynecology is almost always studied and practiced along with obstetrics (see  
obstetrician), these two fields of study are commonly abbreviated as OB/GYN. Obstetrics  
is the science that deals with the care of women and their fetuses (developing babies) 
during pregnancy and childbirth, and during the events that come before and soon after 
birth. Obstetrics also deals with the normal and abnormal functioning of the female 
reproductive system. Gynecologic and gynecological mean pertaining to gynecology as 
well as the study of the breasts and the diseases of the female reproductive system.
The counterpart of gynecology is andrology, which is the medical specialty dealing with 
the male health, especially those of the male reproductive system and urinary problems 
unique to men. Gynecology comes from the Greek word "gyne" meaning "woman," and 
the Greek word "logos" meaning "the study of." Put the two words together and you have 
"the study of woman."