The proline in A2 milk has a strong bond to another small protein called BCM 7, which helps keep it from being released.
Histidine (the mutated protein), on the other hand, only weakly holds on to BCM 7, so it is liberated in the GI tract of animals and humans who drink A1 cow milk. Now, BCM7 is a powerful opiate that can have a very detrimental impact on your body.
As discussed in the article above, it is likely the cause of increased phlegm production in your digestive and respiratory tract, which can worsen upper respiratory problems.
This confirms previous findings, discussed in Keith Woodford’s book Devil in the Milk: Illness, Health and the Politics of A1 and A2 Milk.
In it he writes that BCM 7 selectively binds to the epithelial cells in mucus membranes and stimulates mucus secretion.
But that’s not all. BCM7 has also been implicated in other far more serious health problems, such as:
- Type 1 diabetes
- Neurological impairment, including autism and schizophrenia
- Impaired immune function
- Autoimmune disease
- Heart disease
For those of you who want to investigate this at greater depth, betacasein.net offers a comprehensive list of published scientific studies of the differences between A1 and A2 milk and their health ramifications.
You can also pick up a copy of Keith Woodford’s informative book, Devil in the Milk: Illness, Health and the Politics of A1 and A2 Milk.
The US Raises Mainly the “Wrong” Cows
A1 cows include the black and white breeds like Holsteins and Friesians. Unfortunately, Holsteins are one of the most popular breeds in North America.
The older breeds, such as Jersey’s, Guernsey, Asian and African are primarily A2’s. Goats and sheep also produce the healthier A2 type milk.
“Our issue in America is that we have the wrong cows,” Dr. Cowan writes.
“When you take A1 cow milk away, and stimulate our own endorphins instead of the toxic opiate of BCM 7, some amazing health benefits ensue.