Every other source for information, including (or maybe especially) human experts can also make mistakes or hallucinate.

The reason ppl go to LLMs for medical advice is because real doctors actually fuck up each and everyday.

For clear, objective examples look up stories where surgeons leave things inside of patient bodies post op.

Here’s one, and there many like it.

https://abc13.com/amp/post/hospital-fined-after-surgeon-leav...