There are yogurts with cholesterol-reducing properties and other dairy products which can supposedly produce “optimal” bowel health. Then there are baked beans with “added omega threes” and drinks that profess to reduce blood pressure. The European Food Safety Authority is now providing “opinions” on the science behind such claims. However a lot of the claims seem to rely on evidence about surrogate markers (eg a product may reduce cholesterol, however what we do not know if this method of reducing cholesterol will go on to have an effect on avoiding heart attacks or stroke.)
In the end, I suspect that there will not be many adverts rivalling the qualities of ordinary fruit and vegetables – generally for sale without much in the way of flashy health claims.