It's great to be suspicious of results in a field in which you're an expert, but physicists and biochemists hardly ask their doctor for peer-reviewed proof that his advice is correct. At any rate, people who are so inclined can look up actual research done; but most people won't have the expertise to understand it anyway, which is completely normal outside of your own field.

To constantly question everything, or to go with one's preconceived notions irrespective of how much evidence there is against them, is both dangerous and stupid - professional scientists might be wrong about some things, but if the vast majority of them agree on something that you're not qualified to discuss, you can and should assume that they're probably right. A good litmus test for this is asking what evidence you would need to be convinced that you're wrong; if you don't know or if the answer is there is no evidence, you don't know what you're talking about.