Hidden sign that could shorten life discovered by scientists

Researchers at Harvard Medical School have identified that elevated iron levels in the body may be a hidden risk factor capable of shortening lifespan. Excess of this trace element, which is essential for normal organ function, can damage cells, disrupt liver and heart function, and increase the risk of developing chronic diseases, even if a person feels healthy. The article explains that iron is a component of hemoglobin and is necessary for oxygen transport, but the body has limited capacity to excrete excess iron. Iron accumulation leads to oxidative stress, which damages cell membranes, proteins, and DNA. The liver, heart, and pancreas are particularly sensitive to this. One of the diseases associated with iron overload is hemochromatosis, which can cause liver fibrosis and cirrhosis, heart failure, diabetes, and joint pain. To assess iron stores, doctors use tests for ferritin and transferrin saturation, although elevated ferritin may be a result of inflammation. The article also warns that iron deficiency is dangerous and can lead to anemia, so reducing iron levels without medical indications is not recommended.