I'm a bit disgusted that you're asserting that the article asserts a causative relationship when it does no such thing. Here's the paragraph in question & full

I'm a bit disgusted that you're asserting that the article asserts a causative relationship when it does no such thing. Here's the paragraph in question & full: Karma’s a bitch: the Baltimore Longitudinal Study of Aging reports, “Those holding more negative age stereotypes earlier in life had significantly steeper hippocampal volume loss and significantly greater accumulation of neurofibrillary tangles and amyloid plaques.” Ageists become the senescent figures they once abhorred. Nowhere does it imply any causation. The reference to "Karma" isn't the author professing his believe in the cosmic power's intervention to establish justice among the people. It's just a rhetorical devise to highlight the finding.