Lactational amenorrhea

Lactational amenorrhea
An infant breastfeeding
Background
Type	Behavioral
First use	Prehistory; Ecological method 1971
Failure rates (First six months postpartum)
Perfect use	<2%
Typical use	?
Usage
Duration effect	Up to 6 months (longer in some cases, with greater failure rate)
Reversibility	Yes
User reminders	Adherence to protocols
Clinic review	None
Advantages and disadvantages
STI protection	No
Periods	Absent
Benefits	No external drugs or clinic visits required

Lactational amenorrhea, also called postpartum infertility, is the temporary postnatal infertility that occurs when a woman is amenorrheic (not menstruating) and fully breastfeeding.