Skin cancer is a malignant growth on the skin which can have many causes. The most common skin cancers are basal cell cancer, squamous cell cancer, and melanoma. Skin cancer generally develops in the epidermis (the outermost layer of skin), so a tumor is usually clearly visible. This makes most skin cancers detectable in the early stages.
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Osteoporosis is a condition that means your bones are weak, and you're more likely to break a bone. Since there are no symptoms, you might not know your bones are getting weaker until you break a bone! You can't "catch" osteoporosis or give it to someone else.
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In medicine, mastectomy is the medical term for the surgical removal of one or both breasts, partially or completely. Mastectomy is usually done to treat breast cancer; in some cases, women and some men believed to be at high risk of breast cancer have the operation prophylactically, that is, to prevent cancer rather than treat it.
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There are many benefits to breastfeeding. Even if you are able to do it for only a short time, your baby's immune system can benefit from breast milk. Here are many other benefits of breast milk for a mother, her baby, and others.
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Genetics is the science of heredity and variation in living organisms. The fact that living things inherit traits from their parents has been used since prehistoric times to improve crop plants and animals through selective breeding.
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The heart works 24 hours a day, pumping oxygen and nutrient-rich blood to the body. Blood is supplied to the heart through its coronary arteries. If a blood clot suddenly blocks a coronary artery, it cuts off most or all blood supply to the heart, and a heart attack results. Cells in the heart muscle that do not receive enough oxygen-rich blood begin to die. The more time that passes without treatment to restore blood flow, the greater the damage to the heart.
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