New moms consuming the placenta after birthing babies is nothing new. It’s been touted as a natural supplement to help decrease bleeding and Postpartum Depression. Hilary Duff brought it back into the spotlight recently when she gave birth to her second child last month, daughter Banks. She disclosed that turned her daughter’s placenta into a “delightful” smoothie.

During an episode of Dr. Berlin’s Informed Pregnancy podcast, the 31-year-old actress revealed that “I haven’t had a smoothie that delightful since I was like 10 years old. It was calorie-filled with juice and fruit and everything delicious.”

Duff also said she made ice cubes out of the placenta for future use.

But is this a good idea?

Doctors say you’re risking your baby’s health by choosing to consume the placenta.

According to Women’s Health:

A 2016 case study released by the Center for Disease Control and Prevention revealed that one 5-day-old infant became sick after the baby’s mother took placenta pills (a.k.a., placenta that had been dried, ground up, and encapsulated). The baby contracted a bacterial infection called group B streptococcus (GBS) which is found in the vagina or rectum of one-quarter of healthy women.

It’s all about contamination, regardless of how you consume it, saysKecia Gaither, M.D., who told Women’s Health: “There is always concern for infection, and there are concerns about how the placenta is handled and stored post-birth.”

Because there’s no hard evidence that consuming the placenta is beneficial, it’s best to avoid it all together. There are other ways to make a delicious smoothie.