[Anemia: new developments and diagnostic and management strategies].

Anemia is a major public health problem that affects approximately 25% of the world's population. Its prevalence is increased in certain populations: it affects 40% of pregnant women, 42% of children under 5 years old and it increases with age from 50 years old. Anemia can be an emergency in case of hemorrhage or acute hemolysis, but it is most often chronic. Anemia can be constitutional or acquired. In the second case, iron or vitamin deficiencies are the most frequent causes. Anemia can also be a diagnostic pointing to hypothyroidism, inflammatory disease, or cancer. In this article, we provide an update on diagnostic and management strategies for anemia and discuss new scientific developments.