The benefits of giving babies breast milk has sparked a trend in online breast milk sales.
However, that trend could be putting babies at risk.
A recent study published in the journal "Pediatrics" showed a large percentage of breast milk bought online is tainted.
Researchers with Nationwide Children's Hospital tested 101 samples of breast milk bought online and found 74 percent had high levels of bacteria.
Of those, 64 samples had staphylococcus bacteria, 36 had streptococcus bacteria and three contained salmonella.
"It's shocking because you would think breast-feeding moms would do what they have to do to make sure it wouldn't be tainted, but you don't know what you're getting when you go online," said Christina Coronado, the mother of a toddler.
Katherine Velasquez, with La Leche League, an organization that encourages and educates better understanding of breastfeeding, said the organization's stance is that one should get breast milk from a reputable milk bank.
"One of the benefits is that the milk banks screens the donors before they accept the breast milk," said Velasquez.
Since the Food and Drug Administration doesn't regulate breast milk sales, it's up to parents to find the best options for their babies.