Peter Attia· MD
So, but I just want to make one thing to the listener a little bit clear, which is on the y-axis here, you're seeing units of grams per centime squared. Earlier I said g per cime cubed. Why the difference? Well, the difference is even though density in real life is measured in grams per centime cubed because you need mass per unit volume, with bone density, it's actually done as grams per centime squared because it's a planer measurement.