Theoretically, bringing more young into the system should drive down costs for everybody. The young don’t use insurance as much as the old, so if there are more under-25s buying into the system (on their parent’s account), there are more people putting money into the insurance pool than without this new provision. Theoretically, I said. Because whether or not the insurance companies pass on these savings to all of us remains to be seen. My guess is that it won’t happen unless regulations require it. But that would be tyranny, right?