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www.reference.com/world-view/dangerously-low-hemoglobin-level-f86292d0c87284c

Dangerously low hemoglobin levels that require transfusion are 7 grams per deciliter for ICU patients and 8 milligrams per deciliter for most other patients, according to U.S. News. Low hemoglobin is anything below 13.5 grams per deciliter for men, and 12 grams per deciliter for women, according to

www.reference.com/science/danger-high-hemoglobin-efb5d9284d1c39e9

A high hemoglobin count can indicate serious medical conditions such as kidney failure, liver cancer and heart failure, according to Mayo Clinic. High hemoglobin can also result from residing in high-altitude environments. High hemoglobin counts are often expected by physicians when testing for cert

www.reference.com/article/causes-low-hemoglobin-82c67dcf449cfad2

A low hemoglobin count, also known as anemia, is caused by pregnancy, a menstrual period, a diet low in iron, blood loss, or a disease that causes the body to produce fewer red blood cells or to destroy red blood cells. According to the Mayo Clinic, medications also sometimes cause anemia. These inc

www.reference.com/world-view/treatment-low-hemoglobin-d40fbf6b8db254f8

Low hemoglobin count only merits treatment when it takes the form of the disease called anemia, according to Mayo Clinic. The treatment for anemia varies with the cause. Iron deficiency, chronic disease, vitamin deficiency, aplastic anemia, bone marrow disease and hemolytic anemias are the various t

www.reference.com/world-view/symptoms-low-hemoglobin-63a4d42a9d4535f9

Symptoms of low hemoglobin levels, a contributing factor of anemia and blood count-related illnesses, include fatigue; shortness of breath; weakness; or a fast or irregular heartbeat, according to Mayo Clinic. Some patients may also experience pale skin and gums.

www.reference.com/article/dangerous-hemoglobin-level-7288bcdc142f4989

A dangerous hemoglobin level is hemoglobin greater than 18.5 g/dL in men and 16.5 g/dL in women, Medscape states. This is known as polycythemia.

www.reference.com/article/high-hemoglobin-levels-dangerous-92a788d177a7e86c

An elevated hemoglobin count may impair circulation and disrupt the adequate delivery of oxygen to the tissues, possibly leading to peripheral cyanosis and impaired mental function due to poor cerebral circulation, according to SteadyHealth. Elevated hemoglobin also increases the risk of thrombo-emb

www.reference.com/world-view/causes-low-hemoglobin-levels-1dd09591e84554f2

Low hemoglobin counts may be linked to certain diseases and conditions such as cancer, cirrhosis, hypothyroidism, iron deficiency anemia, kidney disease, leukemia and certain medications. Additional causes may include an enlarged spleen, vasculitis and blood loss resulting from a wound, bleeding in

www.reference.com/world-view/causes-high-hemoglobin-51796e45f6bcd634

Causes of high hemoglobin include increase in red blood cell production, smoking, certain medications and bone marrow disease. Some conditions, such as heart failure, liver cancer, kidney cancer and dehydration can also lead to high hemoglobin count, as stated by Mayo Clinic.

www.reference.com/article/hemoglobin-ead6edfc1f9065c7

According to the Information Center for Sickle Cell and Thalassemic Disorders, hemoglobin bonds to oxygen molecules from the lungs and delivers them to cells throughout the body. It does this with two similar bonded proteins which are necessary for the capture and release of oxygen via a central iro