You don't need an MD to know that stimulants increase focus.
But you should be one to tell someone to take medication.
And what would you say if the author comes back and replies "Yes, I am an MD."
"Oh, okay. Sorry."
?
More likely what lottery numbers I should pick for the week since they must be psychic to diagnose a guy on the Internet after just a few sentences.
Right. So regardless of his qualifications, you would have objected to his suggestion. So why ask at all?
I think brango's point is that it can be dangerous to give medical advice if you are not qualified / not a MD, & even then, it should be given only after proper examination
The MD will not even give a public advice public about sensitive subjects.