In essence, backlinks to your website are a signal to search engines that others vouch for your content. If many sites link to the same webpage or website, search engines can infer that content is worth linking to, and therefore also worth surfacing on a SERP.
Blood disorders can affect any of the three main components of blood: 1  Red blood cells, which carry oxygen to the body's tissues. 2  White blood cells, which fight infections. 3  Platelets, which help blood to clot.
When a blood clot stops blood flow to an artery in the heart or brain, a heart attack or stroke can result. Blood clots also can block veins in other parts of the body, causing conditions like varicose veins or pulmonary embolism (a life-threatening blood clot in the lungs). When a blood clot forms and stays where it forms, itâs called a thrombus.