Most gym owners probably recognize that. They’re looking to maximize revenue, tap into a population—boys and young men—that they haven’t been able to reach before, and parkour and ninja programs is how they’re going about it. These programs are not intended as a bait-and-switch: get the boys in for ninja and then get them on the parallel bars. While gymnastics is an excellent foundation for ninja and parkour—some of the most popular ninjas, like Kacy Catanzaro, started out as gymnasts—it’s hardly a given that someone drawn to ninja will transfer over to more the staid world of men’s gymnastics. By baking spinach into brownies, you might get children to eat their veggies, but you’re not exactly cultivating a love for spinach.
A 2005 paper suggested leuprorelin as a possible treatment for autism ,  the hypothetical method of action being the now defunct hypothesis that autism is caused by mercury , with the additional unfounded assumption that mercury binds irreversibly to testosterone and therefore leuprorelin can help cure autism by lowering the testosterone levels and thereby mercury levels.  However there is no scientifically valid or reliable research to show its effectiveness in treating autism.  This use has been termed the "Lupron protocol"  and Mark Geier , the proponent of the hypothesis, has frequently been barred from testifying in vaccine-autism related cases on the grounds of not being sufficiently expert in that particular issue    and has had his medical license revoked.  Medical experts have referred to Geier's claims as "junk science".