I haven't actually read this book but I have had the misfortune to meet Dr. Gern. He was arrogant, condescending, rigid, and a horrible listener who frequently interrupted to insist he is right and anyone who disagrees with him is wrong or a "quack." He talked in total contradictions and was argumentative. He was convinced he already had all the answers and he asked questions only to "prove" his points - not to comprehensively take an individual history. He offered exactly one treatment option and it was very old school with the potential to cause harm. I placed a formal complaint and was granted a refund. In good faith I feel compelled to warn others - his philosophy is not the least bit empowering to patients or families. There are so many other doctors and approaches for asthma patients - don't waste your time on this one.
