I have been sick for several years without knowing what the cause was, lost abt. 50 lbs (weigh 69 lbs now) anxiety attacks and panic attacks too at times, bad stomach for yrs which stress aggravates , gas builds up in stomach and chest until I can barely get a breath. I am 81 yrs old and it seems like everything I do makes it worse. I started thyroid pills in August which they just changed the dosage on by half. I had started getting an irregular heart beat which potassium seemed to help,this may have been caused by the too high dosage I was taking.Also the thyroid pills take potassium out of your body so that didnt help. I would like to hear from others who might have similar problems and see how you are coping.