Can't really give any feedback on the heart thing... but irregular eating/sleeping times are probably my *biggest* trigger now that I've cut out all the trigger foods. Well, that and eating too much at one sitting.
I totally know where you're coming from with the D attacks, immodium, people thinking you're anorexic - I've been there! But yeah, my body really responds well to a regular routine - without one, it's really hard for me to get stabilized. Hope that helps!
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Re: Irregular sleeping, eating times...trigger?
But yeah, my body really responds well to a regular routine - without one, it's really hard for me to get stabilized. Hope that helps! 
