What is a healthy hemoglobin level by age?

Hemoglobin levels can vary based on age and gender. In general, a healthy hemoglobin level for adult males is around 13.5 to 17.5 grams per deciliter (g/dL) and for adult females is around 12.0 to 15.5 g/dL. Children and adolescents may have slightly different reference ranges. It's important to note that optimal hemoglobin levels can also depend on individual factors and may vary among different populations and regions. Consulting a healthcare professional and interpreting hemoglobin levels in the context of overall health is crucial.