Just a thought - have you had your thyroid checked? A low heart rate and cold senstivity can be linked to a thyroid dysfunction.
Or - have you had allergy testing? Are you allergic/sensitive to grains or dairy or nuts?
I would also stay away from ALL sugars and white flours/starches. It doesn't matter if it's organic - it's still poison! White flour kills your colon - it just sticks there and the Sugar feeds parasites. If you're serious about your health, get rid of that stuff. If you need something sweet, get a juicer and juice grapes, pineapple, apples, carrots ect. everyday.