A medical condition where blood doesn't have enough healthy red blood cells, making you tired and weak.
From Greek 'an-' (without) and 'haima' (blood). Medical term coined in the 19th century to describe deficient blood. The prefix 'an-' appears in many medical terms meaning 'without' or 'lacking.'
Your body makes about 2 million new red blood cells every single second—but in anemia, this production slows down or the cells die too fast. Certain populations have genetic anemias: sickle cell is protective against malaria in African regions, showing evolution's trade-offs.
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