> It's only when the 20th century rolled around, and meat became cheap/available everywhere, that people started eating meat once a day, leading to a spread of

> It's only when the 20th century rolled around, and meat became cheap/available everywhere, that people started eating meat once a day, leading to a spread of all kinds of diseases, heart attacks, cholesterol, cancer, etc. It's not that simple. The Inuit are an obvious counterexample. In fact, if you look at many hunter gatherer societies (Ache, Yanomamo, Waorani, !Kung, etc), almost all eat some form of meat (I'm including arthropods as meat) almost every day. Cancer, heart disease and other afflictions that appear later in life are probably more common in the 20th century largely because life expectancy is so much longer than it used to be, not because of regular meat eating.