Levels of temporary invalidity because of catching cold were analyzed
in 101 working women over two years and these women's levels of serum
iron, total iron-binding capacity of the serum, transferrin saturation
with iron, serum ferritin, and red cell ferritin measured. Women with
stable iron reserves in the body virtually have no sick leaves becaus
e of catching cold, whereas in those with iron deficiency susceptibili
ty to catching cold is increased, and if iron metabolism intensity in
the body grows, invalidity periods are much longer. Normalization of n
ot only iron reserves in the body, but correction of iron metabolism a
s well should be regarded as a factor exerting a favorable effect on b
ody resistance to catching cold.