Normal men do not typically loose interest in sex altogether. Even 77 year old men still have at least some interest in sex. If a man looses his sex drive altogether that could be a sign of any number of possible issues. It could be psychological, like the death of a wife or girlfriend or something that affects a guy mentally.
In a normal adult the red cells of about half a litre (almost one pint) of blood are produced by the bone marrow every week. Almost 1 percent of the bodyâs red cells are generated each day, and the balance between red cell production and the removal of aging red cells from the circulation is precisely maintained. The rate of blood cell formation varies depending on the individual, but a typical production might average 200,000,000,000 red cells per day, 10,000,000,000 white cells per day, and 400,000,000,000 platelets per day.
Although many parts of the body help make red blood cells, most of the work is done in the bone marrow. Bone marrow is the soft tissue in the center of bones that helps form all blood cells. Healthy red blood cells last between 90 and 120 days. Parts of your body then remove old blood cells. A hormone called erythropoietin (epo) made in your kidneys signals your bone marrow to make more red blood cells. Hemoglobin is the oxygen-carrying protein inside red blood cells. It gives red blood cells their color.