[Zak]

I'm not sure that it does if the argument is ideological in nature. I'll give an example:

I believe hate speech and racist propaganda are examples of free speech protected by the Constitution in the US. I believe that it is wrong for governments to violate this right even if they don't enumerate it in the core of their system of laws. A sociological study showing clear and convincing evidence that hate speech and racist propaganda have bad results won't change my opinion that they're free speech that no government has a right to prevent.

I believe that no government has a right to prevent people from having medical tests done on themselves. The scope of any regulation must be limited to ensuring that labs collect specimens safely, conduct tests accurately and refrain from making false claims about the services they offer. If they are making false claims about what the test results mean, then existing consumer protection laws already apply.