This is known as iron-deficiency anemia, the most common type of anemia. Factors that can lower your body's supply of iron include: 1  blood loss (caused by ulcers, some cancers, and other conditions; and, in women, during monthly periods); 2  a diet that doesn't have enough iron in it;3  taking medications that interfere with the ability of the body to absorb iron; blood loss (caused by ulcers, some cancers, and other conditions; and, in women, during monthly periods); 2  a diet that doesn't have enough iron in it; 3  taking medications that interfere with the ability of the body to absorb iron; 4  an increase in the body's need for iron (for instance, in women during pregnancy).
Definition. An anion is an atom or a molecule which is negatively charged, i.e. has more number of electrons than protons. A cation is an atom or a molecule which is positively charged, i.e. has more number of protons than electrons.
A negatively charged ion that is attracted to an anode (positively-charged electrode), in electrolysis. Anions are usually shown as the second group in simple inorganic molecules, thus Cl- is the anion when common salt (NaCl) is dissociated in solution. Na+ is the CATION.