The Lactational Amenorrhea Method (LAM): How Breastfeeding Can Act as Natural Birth Control

The lactational amenorrhea method (LAM) is a natural form of postpartum contraception that uses exclusive breastfeeding to temporarily prevent pregnancy. When followed correctly, LAM can be a highly effective, hormone-free birth control option for new mothers during the first six months after giving birth.

How LAM Works

When you breastfeed exclusively, your body produces hormones that naturally suppress ovulation. Without ovulation, you cannot release an egg; which prevents pregnancy. This is why some women experience amenorrhoea (no periods) while breastfeeding.

When You Can Use LAM

LAM is recommended as a short-term contraceptive method and is only effective for the first six months postpartum. After six months, or if your baby begins taking other foods, the method becomes unreliable and another form of contraception should be used.

How to Use LAM Correctly

To ensure LAM works as effective birth control, all of the following conditions must be met:

  • Breastfeed exclusively, both day and night
  • Feed every 4 hours during the day and every 6 hours at night
  • Do not give your baby any formula, food, or drinks (other than water, juice, or vitamins if needed)
  • Avoid pacifiers/dummies, as they can reduce feeding frequency
  • You must not have had a period since giving birth

If any of these conditions change, LAM is no longer considered reliable.

Effectiveness of LAM

When used perfectly, the lactational amenorrhea method is up to 99% effective, making it one of the most effective temporary natural contraception methods available during early postpartum.

Limitations of LAM

While LAM can be a convenient and natural birth control method, it does have limitations:

  • LAM does not protect against HIV or sexually transmitted infections (STIs)
  • It is only suitable for the first six months after birth
  • You will need a backup contraceptive method ready for when breastfeeding patterns change or your baby begins solid foods

What Does Not Count as LAM

LAM is no longer effective if:

  • You pump instead of direct breastfeeding
  • Your baby receives formula, food, or additional drinks
  • Your period returns after childbirth
  • Feeding intervals become longer than the recommended times

When any of these occur, it is important to transition to another reliable contraceptive method.