Breastfeeding as Birth Control

Studies confirm that breastfeeding can be a very effective form of birth control. The child -spacing effect depends primarily on the pattern of breastfeeding. Researchers developed a set of guidelines called LAM, Lactational Amenorrhea Method, to help women understand their fertility while breastfeeding.

According to the LAM guidelines a mother has less than a 2% chance of becoming pregnant if:

  • Her baby is less than six months old
  • Her menses have not returned
  • She is not supplementing her baby regularly or going longer than 4 hours during the day and 6 hours at night without breastfeeding.

Once any of the above are no longer true, a woman's chance of becoming pregnant increases. However for many women menstruation and fertility, do not return for many more months. There is a modified LAM in societies where frequent nursing is the norm for baby's entire first year, extending the infertile period from 6 months to 9.

How Can You Use Breastfeeding As Birth Control?

Here is what you can do to extend your period of infertility.

  • Nurse your baby on cue.
  • Let baby nurse for comfort as well as for food. That means that all baby's sucking takes place at the breast, not on a pacifier, thumb or bottle.
  • After six months, introduce solid foods slowly. Breastmilk should remain baby's main source of nutrition throughout his first year. Breastfeed him before offering solids.
  • Continue to let your baby nurse during the night. Menstruation and fertility often return when baby starts sleeping more than six hours straight.
  • If you must be separated from your baby, expressing your milk at least as often as your baby nurses and never less than every four hours has been found to be almost as effective. Nursing more than usual during the times that you are together will boost your milk supply and infertility.

Once a woman begins menstruating she should consider herself fertile. Often a woman's first period after birth is anovulatory, that is, it is not preceded by ovulation. Many women see this period as a warning sign. In some cases a woman will have regular periods but still not conceive due to the hormones of breastfeeding. On the other hand, a woman who goes many months with out menstruating is more likely ovulate before getting her period, meaning, without any warning at all. She can then conceive without ever having a period.

The average length of amnorreha for a woman breastfeeding according to above guidelines is around 14 months. A woman's body chemistry plays a key role in determining her fertility while breastfeeding. There are women who will follow all of the guidelines and be part of the 2% for which LAM was not effective while others use pacifiers from the day baby is born but continue on for 2 years without ever getting a period as long as their toddler nurses on occasion.

Find an ObGyn

    All Guides
    Alabama
    Alaska
    Arizona
    Arkansas
    California
    Colorado
    Connecticut
    DC
    Delaware
    Florida
    Georgia
    Hawaii
    Idaho
    Illinois
    Indiana
    Iowa
    Kansas
    Kentucky
    Louisiana
    Maine
    Maryland
    Massachusetts
    Michigan
    Minnesota
    Mississippi
    Missouri
    Montana
    Nebraska
    Nevada
    New Hampshire
    New Jersey
    New Mexico
    New York
    North Carolina
    North Dakota
    Ohio
    Oklahoma
    Oregon
    Pennsylvania
    Rhode Island
    South Carolina
    South Dakota
    Tennessee
    Texas
    Utah
    Vermont
    Virginia
    Washington
    West Virginia
    Wisconsin
    Wyoming