Quote Originally Posted by Pooka1 View Post
A cadaver study demonstrated similar in normals.
They can't use cadavers as controls in this study because they're looking at the rate of change over 10 years. So they use living controls who can show a rate of change. using this control group, they show a doubling in the rate of degenerative changes between their subjects and an historical cohort of age-matched controls.

The paper does a good job of summarizing the previous research, explaining why they believe they're seeing the results they report. For anyone interested, the full report is available online.