Learn about the medical reasons of having low or high hemoglobin levels in your blood and how to increase low hemoglobin levels with diet or supplements. Know about normal hemoglobin levels by age, including adults, children, and pregnant women. Understand the importance of healthy levels. Normal hemoglobin values are related to the person's age and sex. Normal values may vary slightly between test systems, and which groups of doctors have determined "normal values" for their group of patients; however, the value ranges are close (vary by about 0.5 g/dl) for almost every group. Hemoglobin is a vital component of your blood. Learn why doctors test your hemoglobin levels during routine blood work and what abnormal results may mean.
