This is a very interesting summary of the available research. I note, however, that one of the key papers on which this article is based concluded that acetone was a reliable indicator of fat metabolism after comparing the serum BOHB and exhaled acetone of twelve (12) subjects fed four ketogenic meals over a twelve-hour period that followed a twenty-four-hour fast.
I would like to see a much larger study done over a period of at least twelve weeks, since we know that in most people fat-adaptation takes at least six to eight weeks, and that measured ketone levels often drop significantly after fat-adaptation is achieved. I would be interested to know if this relationship between the amount of acetone excreted in the breath and the amount of fat being metabolized persists after twelve hours.
I would also like to know whether Joseph Andersonās company, Mediamonitor Corp., made inexpensive breathalyzers. They donāt show up in the Google searches I did, so I must conclude that either they are an extremely small company, or else they have gone out of business.
for me.
