No doubt about the immune system being supressed by mercury.

After living a life of working out and riding a bike or playing raquetball almost daily, I had to stop around 1998 because I would get flu-like symptoms the next day (every single time). This was the first time this ever happened to me in my life (on a regular basis).

Now, I'm back to being able to do be active with almost the intensity I used to without a hint of being sick.

The difference between having mercury and not is night and day.