Don't believe the hype

Companies offer many types of nonsurgical penis-enlargement treatments. They often promote them with serious-looking ads that include support from "scientific" researchers.

If you look closely, you'll see that claims of how safe they are and how well they work haven't been proved. And these products may have potentially dangerous ingredients not listed on the label.

Marketers rely on ads with people who recommend the product. Marketers also may use data that's not accurate and questionable before-and-after photos. Dietary supplements don't need approval by the U.S. Food and Drug Administration. So manufacturers don't have to prove how safe a product is or that it works.