If you already suffer under bacterial overgrowth, milk can cause a problem. You'd notice that soon.
In those cases Ray Peat recommends to try different brands of milk because they have different kinds of bacteria, depending on what the cows ate. And to start with very little milk and increase it slowly.
In those cases Ray Peat recommends to try different brands of milk because they have different kinds of bacteria, depending on what the cows ate. And to start with very little milk and increase it slowly.