The use of lactational amenorrhea method (LAM) can be seen across the world. It is used in many different societies to varying extents. LAM can be used by itself or in combination with other methods. There are multiple examples of LAM use covered in studies conducted about postpartum birth control methods in various countries and areas of the world. Additionally, the connection between LAM use and infant nutrition and health has been examined in different contexts. Beyond the physiological factors that influence lactational amenorrhea, cross cultural differences can help account for many of the variations in lactational amenorrhea.