 [ Symptoms ] could light colored or watery blood be a sign of anemia  my blood looks light red rather than bright red it seems thin it will not even completely stain a white t shirt my spouse has much thicker darker blood by comparison [ Disease ] most helpful answer it is been a while since i posted this i have taken steps to improve my iron intake and my blood looks darker and stains things better so i think watery looking blood might have been due to a lack of red blood cells i did not have too much trouble breathing however so i am still not entirely certain