is diet advice speech protected by the 1st Amendment?

[Person Man]

I had some friends who did a similar Senior Design project and that is what one of the panelists asked about. "You could get in trouble for offering unlicensed dietary advice". Fun times.

I mean, you can't just give legal advice through "speech", but I guess just trying to educate people on generalized knowledge or ideas that don't attempt to do anything for them as an individual should be protected speech. That is, telling someone who they should/could sue, if anyone, if a dog bites them at the dog park or what to do if the police are accusing them of having drugs is very different than generalized advice about "their rights" or even "don't talk to cops or invite them in (not unlike vampires)".

For this case, I would say that there is a 70% chance that this isn't "speech", but it will largely hinge on whether this was just general sharing of perceptions and observations or actual unlicensed professional services.