People here know that.

But they also know many doctors aren’t able to help much with panic/anxiety, not because they’re ignorant or incompetent but because the causes and effective treatment options vary so much from person to person, and the whole topic is not very well understood by anyone, really.

One of the treatment options suggested above (CBT) is a conventional medical approach.

The others are often reported to be beneficial for some people and are not commonly reported to do any harm, so it is fine for someone to suggest them.

As someone who went to their doctor (experience summed up elsewhere in this thread), I'd say there are merits to following internet advice with regards to this subject. Reading others' experience and techniques (even if I didn't adhere to them) was highly beneficial to my understanding of what was happening to my body. I don't think a doctor would've given me the time of day.