> I once started working on something similar, but the goal was to suggest a list of ingredients for me to buy for the week so that I had a good total nutritional values. I don't work on it anymore though.
Cronometer has a feature that does this – it checks to see where you aren't hitting your daily targets for macro/micronutrients and then suggests foods that would allow you to hit those targets. Quite nifty.
Try a good Magnesium supplement, this will bring down your general anxiety and also regulate heart contractions:
> In the heart, magnesium plays a key role in modulating neuronal excitation, intracardiac conduction, and myocardial contraction by regulating a number of ion transporters, including potassium and calcium channels.
> The company is focused on a class of molecule known cyclodextrins, and have candidates capable of efficiently binding and sequestering 7-ketocholesterol. This form of oxidized cholesterol is of great importance to the progression of atherosclerosis, and possibly other age-related conditions as well.