Number 4 A2 Milk

Milk is both drunk and used in cheese and butter.  I would say almost everyone has drunk cow milk, especially when they were young.  It ends up that there are two kinds of milk: that being A1 milk and A2 milk.  For most of the last five thousand years if you drank bovine milk you were drinking A2 milk.  There was a mutation in the gene responsible for casein protein formation such that A1 milk forms beta-casomorphin-7 when metabolized.  This peptide may affect people such that GI side effects occur, as well as other organ systems.  I will tell you a little about it.