Can you tell me what is happening with the bone marrow as people age and develop such illnesses?

Its a very complex Question, and its answer can be even more complex ... unless you specialize in the study of Hematology. So the practical answer is ... as we age, the physical body's ability to regenerate its losses, meaning, as it functioned, in the prime ... gets weaker. The bone marrow, primarily is the source of Red Blood Cell generation ... When we are old, this capacity reduces with the passage of time... hence, into various weaknesses, called diseases.

The best course in such conditions is to strengthen the bones, and take light, digestible supplements in our food, to assist revive/improve the marrows functioning. Meaning, take Calcium and Iron containing Vegetables ... with iron's supplementary pills ...This is no prognosis, do consult your physician, regarding your person specific, condition.

Bone marrow like any organ in your body get older and its function decreases with time , you cant compare bone marrow of young man with older man , this is the nature!. But in case of some diseases like if bone marrow cant produce the blood in efficient way , the spleen work instead it and produce the blood cells in combination of bone marrow or alone.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.