Did you know that 75% of the global human population is lactose intolerant? The distribution varies widely and depends on genetics, with about 25% of the U.S. population lactose intolerant. —
Lactose intolerance is not a disorder, in fact it’s perfectly natural! For most adults, there is a dramatic reduction of lactase activity after infancy. This is a genetically programmed event, as lactase’s only role is helping us to digest the lactose sugar, found exclusively in milk.
Humans are adaptable, however, and 25% of us that do digest milk well display “lactase persistence”. But this is clearly not the norm!
My stance on dairy is: If you’re not sensitive to it, grass-fed full-fat fermented dairy or butter is ok because of the presence of unique nutrients such as CLA and vitamin K2.
There is some interesting thinking regarding casein and A1 vs. A2 cows… Most dairy today comes from A1 cows. Its speculated that this genotype produces a form of casein that is more inflammatory
I think the jury is still out on that as the evidence is pretty weak all around, but goat milk is a way of bypassing this fact altogether. Plus it is a source of natural MCTs, or medium chain triglycerides. Nonetheless, A2 milk and goat milk still both contain lactose.
Reference – https://www.ncbi.nlm.nih.gov/pubmed/10096780
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