Proteins get denatured (unfolded) during digestion under the acidic conditions in the stomach or decomposed (broken down to the constituent amino acids or further to other compounds) by the bacteria in the gut. That's why there is no effective oral insulin for Type I diabetics. I don't see why the same issue wouldn't result in total destruction of bone morphogenic protein also.
Did they address this issue at all?
Sharon, mother of identical twin girls with scoliosis
No island of sanity.
Question: What do you call alternative medicine that works?
"We are all African."