I was very happy to see that the article addressed this immediately in the second paragraph: The researchers cautioned, however, that they cannot draw a direct

I was very happy to see that the article addressed this immediately in the second paragraph: The researchers cautioned, however, that they cannot draw a direct, causal connection between meditation and preserving gray matter in the brain. Too many other factors may come into play, including lifestyle choices, personality traits, and genetic brain differences. Good reporting.