question: I am a 49 year-old male who exercises regularly, mostly cardio.  I have noticed that if I eat a lot of nuts, say 1/2 cup or more, I have sever chest pain afterward, lasting for about half an hour.  I have no other symptoms.  If I eat just a few nuts, I have no problem.  This has occurred after eaing primarily almonds on some occasions, and primarily pecans on others.