Breathing technique very effective for severe asthma (and more)

I don't usually report on items in lay publications because these are readily available to you, but this article published today in the New York Times deserves special attention. It describes the Buteyko method of breathing and how it works: by correcting the very common tendency to breathe out too much carbon dioxide, which (counter-intuitively) results in less oxygen delivered to all tissues including the brain. It also dysregulates the autonomic nervous system (the part that runs the internal organs) contributing to asthma, anxiety, cardiovascular symptoms and many other complaints. As Lapis Light patients know, we have advanced this method here with capnography—breathing training using biofeedback based on direct measurements of exhaled CO2 (end-tidal CO2). Breathing effectively is very powerful medicine.