For the past year I have these symptoms it kinda feels like low blood sugar, but I have been tested for diabetis multiple times, these episodes occur when I try to excercise or if I do physical work even just going to the grocery store. I do have a low thyroid condition but I am taking medication and it does not seem to help, my doctor is completely puzzled. In addition, my mother has been suffering the same types of symptoms but much more severe, hers also include heart palipitations and pretty much incapacitate her for the rest of the day even if she trys to do light cleaning. She also has a low thyroid but is unable to take the thyroid medication because it makes her feel worse, it doesn't seem to effect me for the better or worse except make my TSH levels are currently normal. We have found that drinking alcohol makes us feel better, but i don't beleive alcholism is a better substitute, any ideas?