Thanks. I haven't seen that site. I will check it out. My thyroid has been checked a number of times and is always normal. Thyroid can certainly cause it though. My niece was just diagnosed with hypo thyroidism and as a week or two after she started taking meds for it went into a bad depression. They are trying to get her dosing right. Her doc told her she had never seen anyone react like that after starting meds for it. Which made her feel worse of course. She is only 21.