I emailed a professor at Colorado State who knew about growth hormone and IGF-1. He said there is a difference between GH that is injected and turns into IGF-1 and IGF-1 that is consumed orally. GH that is consumed orally is orally inactive and is a protein hormone that is digested completely by the stomach, while GH that is injected into the bloodstream is the only way for GH to take effect on one’s body. And theoretically even if GH was not digested by the stomach, he said there is not enough GH in milk for example to cause any difference. He did not know about anything related to GH and balding though.
Good point and your diligence is appreciated. The stomach does inactivate many things that we eat because of the high acid content. I don’t know what else I can add to this. For those curious about the growth hormone / milk saga, see DHT and Milk.