People have been eating roots and plants to help with digestion, anxiety, etc. since before the invention of writing and probably before the invention of fire.

People have been eating roots and plants to help with digestion, anxiety, etc. since before the invention of writing and probably before the invention of fire. Of course there's going to be a bajillion remedies asserting something to that effect. We've been at it for a while. Products are vague about their wording because they're legally required to be.