Would it be too much to ask for references on food labels?

I came across a package of butter that says its contents are “scientifically proven” to lower cholesterol. And that’s all they say about it, “scientifically proven.” You’ll find food labels with claims like that all over the supermarket.
But I can’t help realising that the people who want to make me believe the effects of this butter have been conclusively proven incidentally also happen to be the people to whom my money goes when I buy this product. Why on earth would I take their word for it?

I think it would only be fair to put references on food labels with scientific claims. To give the more critical butter package readers some possibility to look up who investigated it when and with whose money, and what their results were.
Of course, the bulk of consumers wouldn’t bother with it, but if even the consumers who are interested enough in it have no way to look up and judge for themselves whether or not this butter package is full of shit, these butter salesmen can get away with claiming anything, and only professional consumer goods investigators could ever even tell if they’ve been lying.