Originally Posted by
Quester
Donate blood immediately, or loose a liter some other way. You need to worry about clotting. And, exertion will put a tax on your heart while tries to push the thicker blood through your body. Probbly, your blood isn't thick enough to be the eason for your vision problems so, take a look at everything else. However, do not discount the strain that thicker blood will put on your heart. This can lead to chronic heart trouble or, more acutely, a clot. Google natural blood thinners.