All they need to say in the disclaimer is “This is not medical advice and you should consult a licensed physician before beginning the program.” The customer has a right to consult a physician or go it on their own.
Just yesterday, reddit posted about all the medical mistakes made by LICENSED PROFESSIONALS, estimating 100,000 deaths per year. How many went to jail for those deaths?
And here is Florida coming down on this chick for selling personalized diet plans. Has Florida gone after every licensed professional making medical mistakes, resulting in death or severe harm?