"an industry rife with them"

Please do tell more. Do you mean pharma or diagnostics?

I meant the general industry of flashy looking "health tech" devices, though perhaps it's unfair to link theranos in with some of the more consumer targeted products. but people really want to believe that silicon valley style technology can come in and solve long-standing medical issues, especially around diagnostics, and I've seen a lot of scammy products go by.