I have read some articles that indicate estrogen dominance may cause or exaccerbate CFS. Has anyone heard if low estrogen also plays a part in CFS? Has anyone improved by using HRT? I ask this because as I think back to when I first started getting really bad with this stuff, it was at the same time that I was quitting estrogen. One of the things the doc did was put me back on estrogen. Then all the flap about estrogen and heart problems, etc., came out in the early 200's, and I went off it again. However, I've been more tired since. But then, I'm also older. So--have any of you found using some estrogen to be helpful? Or, have you read articles about this? I can't find any.