Age-related anemia hastens death.People whose blood concentrations of hemoglobin hemoglobin (hē`məglō'bĭn), respiratory protein found in the red blood cells (erythrocytes) of all vertebrates and some invertebrates. decrease as they age are at elevated risk for serious ailments and early death, researchers have found.
Anemia anemia (ənē`mēə), condition in which the concentration of hemoglobin in the circulating blood is below normal. Such a condition is caused by a deficient number of erythrocytes (red blood cells), an abnormally low level of hemoglobin , an inadequate supply of oxygen-carrying hemoglobin, is rare among young and middle-age people and generally develops from a nutritional deficiency or an identifiable health problem, such as a cancer. But previous research suggested that anemia affects about one-eighth of people over age 70. Many of these anemia sufferers have hemoglobin concentrations just shy of the normal range and are never diagnosed with the condition.
To probe the health consequences of age-related anemia, Brenda Penninx of Wake Forest University in Winston-Salem, N.C., and her colleagues analyzed an·a·lyze
tr.v. an·a·lyzed, an·a·lyz·ing, an·a·lyz·es
1. To examine methodically by separating into parts and studying their interrelations.
2. Chemistry To make a chemical analysis of.
3. hemoglobin concentrations in 3,607 people older than 70 years.
During about 4 years of follow-up, 66 percent of the people with anemia were hospitalized at least once, and 37 percent died. Among people without anemia, those rates were 55 and 22 percent, respectively. Having hemoglobin concentrations at the low end of the normal range also predisposed pre·dis·pose
v. pre·dis·posed, pre·dis·pos·ing, pre·dis·pos·es
a. To make (someone) inclined to something in advance: people to higher hospitalization hospitalization /hos·pi·tal·iza·tion/ (hos?pi-t'l-i-za´shun)
1. the placing of a patient in a hospital for treatment.
2. the term of confinement in a hospital. and death rates, Penninx reports.--B.H.