Tag: Tiredness symptoms

While most people experience occasional bouts of low energy, understanding **how long should lethargy last** is crucial for identifying potential health concerns. A general lack of energy that persists beyond a couple of weeks may be more than just simple tiredness and warrants further investigation.

According to the World Health Organization, anemia affects over 1.6 billion people globally, with iron deficiency being the most common cause. Unexplained and persistent fatigue can be one of the first indicators of this condition, prompting many to ask, "At what hemoglobin level do you feel tired?"