I may be one of those people who doesn't like taking medication so what the OP said struck a nerve with me.
I do believe in the importance of lifestyle changes, and everyone can make time for healthy lifestyles. It is true we live in a fast food culture...but it has been proven that poor nutrition can contribute to MI, as well as smoking and not exercising.
If the antidepressants help the OP than for her the choice to take them is positive.