>>14270163Gene level alterations could change long-range behavior. The trick would be those fluctuations would need to be able to target multiple neurons in complimentary ways in order to effect the result. A single fluctuation won't do much. But altering the genetic expression across a swath of the brain would.
Heart attack would be pretty unlikely as that's a self run system.
Still entirely unlikely and anyone who says it happens is more likely to suck my cock.