Three Numbers Are Already on Your Last Blood Test. Nobody Did the Math.

You went home from that appointment with one number and a vague sense you had been weighed and found wanting. On the same page, in the panel your doctor already ordered, there is a ratio nobody calculated. It costs nothing extra and takes ten seconds. Here is what the research actually says about the three numbers that track insulin resistance, including the parts that are oversold and the one claim that does not survive a check.