I'm somewhere between 100 and 100% sure that perception was manufactured by dairy industry marketing.
It was a classic bernays strategy, create the perception that everyone is doing it than everyone will do it. The same strategy used to get people to both start and stop smoking 60 years later
It was a classic bernays strategy, create the perception that everyone is doing it than everyone will do it. The same strategy used to get people to both start and stop smoking 60 years later