Gordie Howe's care in Mexico questioned by McMaster cancer expert

I think the issue is not "stem cell treatments don't work." It's more "we don't know what they do, and whether it is good or bad." That is why we need the studies.

I hope for the best for Mr. Howe, but we really need to have studies done in a scientifically rigorous way and have the results shared openly.

Gordie Howe’s son says the hockey legend’s stroke symptoms have improved since his treatment with stem cells at a Mexican clinic in early December and he wants him to repeat the procedure.

But Mick Bhatia, director of McMaster University’s Stem Cell and Cancer Research Institute warns there’s no scientific evidence that such therapies work, and in some cases they can be seriously harmful or even deadly.