A new report discovered that more than one in 10 sampled breast milk sold online contained cow’s milk which could be harmful to babies with dairy intolerance, especially preemies, doctors say.

The findings from Center of BioBehavioral Health at the Research Institute at Nationwide Children’s Hospital found that women peddling their breast milk as liquid gold” in web exchange sites may be purposefully mixing in the cow’s milk and exploiting a vulnerable population of breastfeeding women with low-milk production.

The milk sell for $1 to $2 per ounce and the mixing is so high that investigators do not think it was an accident but probably done to amplify supply and make more money. 

Read about it in NBCNews.com and WATCH: