I have Graves disease, i ve had the radioactive iodine treatment to kill the tyroid, i m on Levoxyl for life. Over the 7 yrs treated & diagnosed i ve had many issues, heart palpitations, increased heart rate, hand tremors. In december, i had my gulbladder & most of my bile ducts removed whole. My question is, at work & home I experience alot of exhaustion quickly, over the yrs its been getting worst as far as how fast I feel week or tired. I work in a kitchen, averaging 115-130 degree s next to the oven s ect, and can barely work a hour without taking a break. Is this the graves disease, should I be in the heat like this?