I think it can make it more complex however that is not a reason to write off developing medical treatments for half the population. Especially when federal money is often involved. And sometimes the solutions are not that complex. Like including crash dummies that actually mimic a women's skeletal structure and musculature. They aren't simply bigger children or smaller men. And because women-specific crash dummies weren't used until recently, more women died in car crashes, especially those at an angle like hitting a telephone pole. Because the whiplash to their neck was much different than men even of the roughly the same body size.