Marketing has a different role
Marketing presents a product in a memorable way. Research tries to answer questions through transparent methods and comparisons. Both can use numbers, but their purposes are not the same.
Ask what each number proves
A value in ppm can demonstrate a declared composition. It does not automatically demonstrate the reduction of a symptom or the treatment of a disease. The match between proof and statement is essential.
Warning signals
Absolute promises, mechanisms without human studies, and references that are impossible to find deserve careful analysis. So do clinical conclusions based only on personal experience.
Main idea
You don't have to reject any commercial message. You just need to ask that big promises have equally big evidence.