4 Health Products You Should Never Buy Online

Whatever you need, you can get it online. But should you?

— -- intro: Whatever you need, you can get it online. That can make shopping for health products a little bit, shall we say, sketchy. “The people selling certain products to you don’t care about your health and just want money. With greed comes a lot of fraud,” says Josephine Dlugopolski-Gach, assistant professor of internal medicine and pediatrics at Loyola University Health System. While you have to be careful with whatever you buy, these four products below can run you into a lot of trouble—and harm:

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Organizations like Eats on Feets and Only the Breast (which broker such sales) do recommend pasteurizing all milk and screening donors for HIV and other diseases (among other safety suggestions), but many people don’t follow the guidelines, according to a CNN report. “If you can breastfeed that’s wonderful, but if you can’t, formula is the next best thing,” says Dr. Dlugopolski-Gach. “It’s not worth risking going to an online source and getting breast milk from a stranger.” If you do want to donate milk, there are nonprofit milk banks that collect, test, pasteurize, and store human milk for infants, mostly at-risk neonates in hospitals; go to theHuman Milk Banking Association of North America for more information.

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Same goes for buying soy. “Women will buy a ton of this online and say it doesn’t make them feel better, so they buy more and more,” Dr. Bitner explains. Only about 30% of women’s bodies can actually utilize soy to lessen menopause symptoms, so you may be wasting your money. For any hormone treatment, even if it’s labeled “natural” you need a doctor’s guidance; she can ensure you get the right hormones in the right amount every time that work.

This article originally appeared on Health.com.