I have read that ketamine is a street drug being swallowed by many Brits and that it destroys their bladders. Given that the hormones are well absorbed into the blood from the skin, what exactly stops the ketamine from being absorbed, as you state in your book?
Differing things have differing absorption, with some penetrating more locally and some with more systemic effects. Even orally, the ketamine has very poor absorption. The blood levels reflect this, and as ketamine is an anesthetic, the effects of significant blood levels would not be subtle. So the bottom line is that I don't know why they absorb differently than the hormones (good question), but they do;-)
Jacob Teitelbaum, M.D. is one of the world's leading integrative medical authorities on fibromyalgia and chronic fatigue. He is the lead author of eight research studies on their effective treatments, and has published numerous health & wellness books, including the bestseller on fibromyalgia From Fatigued to Fantastic! and The Fatigue and Fibromyalgia Solution. Dr. Teitelbaum is one of the most frequently quoted fibromyalgia experts in the world and appears often as a guest on news and talk shows nationwide including Good Morning America, The Dr. Oz Show, Oprah & Friends, CNN, and Fox News Health.