Joe, if you can get yourself tested for mercury toxicity as soon as possible please do. I was one of those disbelievers, however, after going to 7 doctors, being put on thyroid meds and biodentical hormones i was still exhausted and yes, the symptoms went up and down on a yo-yo depending upon my diet, the stress level in my life and all the other things folks listed above. Getting tested is well worth it. Life is not worth living depressed, living with short-term memory loss and a known toxin in your body that continues to work against your immune system and your overall well being. Please don't do what many of us have done on this forum and wait until it gets worse. It will get worse and then you will have even more things to deal with. This forum has great veterans of this topic on it and can answer many questions and send you to websites to help you understand this.

Blessings,
Gabriella