One of the body’s most common responses to hidden or suppressed trauma is a steady decline in the quality of blood cells being made.
This is why people ‘age’ suddenly when they have a tragedy or loss that ‘takes the life’ out of them.
This situation can also be caused by actual loss of physical blood, starvation and deprivation over a long period of time (especially in the case of women) and various emotional situations.
The most common cause however is the person doesn’t WANT to live anymore if that’s the way life is. A fall in blood quality and quantity is very simply the life energy withdrawing and the body and psyche being in a state of waiting for something to make the person want to live again.