Lactational Amenorrhea Method (LAM)

What is it?

The Lactational Amenorrhea Method (LAM) is a birth control method used by an individual who has just given birth and is exclusively breastfeeding for the first six months after the birth of their baby.

How does LAM work?

Breastfeeding reduces hormone production, preventing ovulation and menstrual periods.  The more you nurse your baby, the less likely you are to ovulate.

How effective is it?

This method is effective only if ALL the following apply for the first six months after childbirth:

  • Your baby must be under six months of age, AND
  • Your monthly periods have not returned (no spotting), AND
  • Your baby is exclusively breastfed with no other fluids (including formula) or foods, AND
  • Your baby is breastfed frequently throughout the day and night.

Even when ALL the above conditions exist, a two per cent chance of becoming pregnant remains. This means two in 100 people who use LAM get pregnant in the first six months after their baby is born.

Can I get pregnant while breast/chestfeeding?

YES, you can get pregnant while breastfeeding. If you are worried about pregnancy, make sure to use a birth control method that works while breast/chestfeeding. Check out the Birth Control/Contraception section and talk to your health-care provider about your choices to find the most suitable method for you.

Does it prevent sexually transmitted and blood-borne infections (STBBIs)?

LAM will not protect a person from STBBIs. To protect you and your partner(s) from STBBIs and pregnancy, use a condom with another method of contraception, also known as dual protection.

To be effective, use birth control correctly and consistently. If you want to prevent unintended pregnancy, choose a method that you and your partner(s) will use every time you have intercourse.

Talk to your health-care provider or visit a sexual health clinic to find out what might work best for you.

To learn more about the LAM, visit Sex and U.

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Last updated: 2024-10-03