Evidence exists for some advertising claims made on the internet.
I think they have underemphasised the evidence supporting the role of antioxidant vitamins in protecting against heart disease. Almost all papers in this field call for more research and will probably continue to do so. Meanwhile, substantial benefit with low risk may be attained by the judicious use of supplements with known safety. Troger and Meyer seem to be concerned that advertising statements for nutritional products may raise false hopes in patients. Such advertising statements should, of course, be factually based, but hope is hope whether it is justified or not.