Learn English – Verb to “make something succeed”

Heterogenize

TFD Encycl.

heterogenization: in metallurgy, generation in some metal alloys of a structure consisting of two or more phases of different crystal lattices.

wiktionary

heterogenization: The process of making or becoming heterogenic or heterogenized

Wikipedia

The process of adoption of elements of global culture to local cultures is known as glocalization3[5] or cultural heterogenization.[14]

ant: homogenize

Usage:
Ian Jarvie, Thinking about Society

In the struggle to control the market, worsting the competition is part of the battle. As firms grow, they begin to differentiate product, and heterogenize content. [emphasis added]

Enlightened

To give information to; inform or instruct.

http://www.thefreedictionary.com/enlightened

So in your context

The stress management program both decreased additional cardiac events, and enlightened them as to what really causes their stress, and with this, how to cope with their stress.