<a class="ro" href="http://www.insidetracker.com/blog/post/38863886706/pump-some-iron-do-you-know-the-difference-between-heme">Hemoglobin</a> is the iron-containing oxygen-transporter in red blood cells. Its primary function is to carry oxygen from the lungs to the muscles, brain, and digestive system where it releases the oxygen for cell use. If you have low hemoglobin levels you may feel fatigued, have low energy, and poor endurance. Low hemoglobin reduces the body’s ability to use oxygen during exercise (VO2max), which may impact your athletic performance. High hemoglobin levels may indicate poor heart or lung function. InsideTracker will tell you what your hemoglobin levels should be based on your age, gender, ethnicity, activity level, and lifestyle. More important, InsideTracker will tell you which iron-rich foods such as beef, turkey, tuna, tofu, and spinach will fit your diet and help you to raise your hemoglobin levels. We even tell you which drinks, such as orange juice, to consume with your meals to increase the amount of iron that your body absorbs.show more
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