Can I vape while breastfeeding?

It is not recommended to use e-cigarettes during lactation.

Although there is no direct evidence indicating that smoking e-cigarettes during lactation is completely safe, current research and the recommendations of authoritative institutions all point to the recommendation against it. The main risks come from the nicotine and other harmful chemicals that are transferred to the infant through breast milk.

Main risks
Nicotine transfer through breast milk: The nicotine in e-cigarettes enters breast milk. Infants metabolize nicotine more slowly than adults, and the effects may last longer. Studies have shown that when the concentration of nicotine in breast milk is high, it may cause changes in the infant's heart rate and blood pressure.

Impact on breast milk production: Nicotine reduces the level of hormones that stimulate milk production (prolactin), which may lead to a decrease in breast milk supply.

Increase in infant health risks: In addition to breast milk, infants may also be exposed to harmful substances through second-hand aerosols. This increases the risk of infant sudden death syndrome (SIDS), lower respiratory tract diseases (such as bronchitis, pneumonia), ear infections, etc.

Unknown long-term effects: E-cigarette vapor contains not only nicotine but also propylene glycol, glycerin, heavy metals (such as nickel, tin, lead), and various flavorings. The combined effects of these substances on the long-term health of infants are still unclear.

Key trade-off: Breastfeeding vs. Not Breastfeeding
Although there are risks, all authoritative institutions, including the Centers for Disease Control and Prevention (CDC), the National Health Service (NHS), and the Australian Breastfeeding Association, emphasize an important point:

If you cannot quit smoking or using e-cigarettes, continuing breastfeeding is still more beneficial for the infant than stopping breastfeeding.

The antibodies and nutrients provided by breast milk can help the baby resist infections, and their protective effect can partially offset the harm caused by smoking or using e-cigarettes.

If you cannot stop, how to minimize the risks?
If you are still using e-cigarettes, you can take the following measures to reduce the harm to the baby:

Adjust the timing: After feeding, wait for 90-120 minutes before using e-cigarettes. Because the nicotine content in breast milk will reach its peak within this time.

Isolate the environment: Do not use e-cigarettes near the baby, at home, or in the car.

Pay attention to cleanliness: After using, change your clothes, wash your hands, wash your face, and brush your teeth before touching the baby.

Avoid sleeping in the same bed: If you or your partner smoke/electro-smoke, do not sleep with the baby, as this will increase the risk of SIDS.

In conclusion, the safest choice is to stop using e-cigarettes. However, if you cannot do so, continuing breastfeeding and taking the above measures is a more beneficial choice for the baby.