Pernicious anaemia is an autoimmune disease in which the body's immune system attacks cells in the stomach leaving it unable to absorb vitamin B12. Vitamin B12 is essential for the production of normal red blood cells. Symptoms include excessive tiredness, numbness in the arms and legs, weakness and unsteadiness.
a disorder in which the placenta develops at the lower section of the uterus (close to or covering the cervix); varies in severity, from no effect on a pregnancy to vaginal bleeding and danger to the mother and the foetus
an area of build-up of fat deposits in an artery, causing narrowing of the artery and possibly heart disease; dental plaque refers to a coating on the teeth, consisting of saliva, bacteria, and food debris, which causes tooth decay
a female sex hormone that plays many important roles in reproduction, including the thickening of the lining of the uterus during the menstrual cycle; and during pregnancy, the functioning of the placenta, and the initiation of labour
large molecules made up of amino acids that play many major roles in the body, including forming the basis of body structures such as skin and hair, and important chemicals such as enzymes and hormones
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