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Polycystic ovary syndrome (PCOS) is a condition characterized by the accumulation of numerous cysts (fluid-filled sacs) on the ovaries associated with high male hormone levels, chronic anovulation (absent ovulation), and other metabolic disturbanc...
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Polycystic ovary disease is a condition in which there are many small cysts in the ovaries, which can affect a woman's ability to get pregnant.
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Polycystic ovary syndrome (PCOS), formerly Stein-Leventhal syndrome, is a disorder in which women do not experience normal release of eggs from the ovaries, they have an abnormal production of male hormones, and their body is resistant to the effe...
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Polycystic ovary syndrome (PCOS), formerly Stein-Leventhal syndrome, is a disorder in which women do not experience normal release of eggs from the ovaries, they have an abnormal production of male hormones, and their body is resistant to the effe...
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Dysfunctional uterine bleeding is irregular, abnormal uterine bleeding that is not caused by a tumor, infection, or pregnancy .
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The menstrual cycle is not the same for every woman. On average, menstrual flow occurs every 28 days (with most women having cycles between 24 and 34 days), and lasts about 4-7 days. However, there is a wide variation in timing and duration that i...
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Radiotherapy is the use of high-energy penetrating radiation (x rays, gamma rays, proton rays, and neutron rays) to kill cancer cells.
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Nonionizing radiation, in contrast to ionizing radiation, is electromagnetic radiation that does not have sufficient energy to remove electrons from an atom or molecules to form an ion (or charged particle) during a collision. Instead, it imparts ...
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Radiation and radioisotopes are extensively used medications to allow physicians to image internal structures and processes in vivo (in the living body) with a minimum of invasion to the patient. Higher doses of radiation are also used as means to...
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Electromagnetic waves of extremely short wavelength (X-rays and gamma rays) and accelerated atomic particles (such as electrons, protons, neutrons, and alpha particles) deposit enough localized energy in an absorbing medium to dislodge electrons f...
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The principal adverse health effects of sunlight are caused by the ultraviolet and visible radiation it contains. Ultraviolet radiation (UVR) comprises a spectrum of electromagnetic waves of different wavelengths, subdivided for convenience into t...
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Diabetes is a chronic (lifelong) disease marked by high levels of sugar in the blood. See also: Gestational diabetes; Type 1 diabetes; Type 2 diabetes; Metabolic syndrome.
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Diabetes is a chronic (lifelong) disease marked by high levels of sugar in the blood. Those with diabetes are at high risk for a number of complications. See also: Diabetes; Gestational diabetes; Metabolic syndrome; Type 1 diabetes; Type 2 diabetes.
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Diabetes mellitus is a condition in which the pancreas no longer produces enough insulin or when cells stop responding to the insulin that is produced, so that glucose in the blood cannot be absorbed into the cells of the body. Symptoms include fr...
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Gestational diabetes mellitus (GDM) is a condition that occurs during pregnancy . Like other forms of diabetes, GDM involves a defect in the way the body processes and uses sugars (glucose) in the diet. Gestational diabetes, however, has a number ...
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Diabetes mellitus is a common metabolic disorder resulting from defects in insulin action, insulin production, or both. Insulin, a hormone secreted by the pancreas, helps the body use and store glucose produced during the digestion of food. Charac...
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Diabetes mellitus is a condition that occurs when either the pancreas does not produce enough insulin or the body's cells stop responding to the insulin that is produced. In either case, glucose in the blood cannot be absorbed or used by the cells...
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Diabetes is the Greek term for "passing through," a phrase used to describe multiple diseases characterized by excessive urination. There are multiple forms of diabetes. The most frequently described is diabetes mellitus, a chronic disorder involv...
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Diabetes mellitus is a chronic disease in which the body is not able to correctly process glucose for cell energy due to either an insufficient amount of the hormone insulin or a physical resistance to the insulin the body does produce. Without pr...
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Diabetes mellitus describes a group of diseases in which there is an elevated level of the sugar glucose, the body's main source of energy for cellular functions, in the blood. The level of glucose, as well as other "fuel" molecules, is increased ...
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A serious disorder caused by an absence of or insufficient amount of insulin in the bloodstream. Insulin is a hormone produced by the pancreas in varying amounts, depending on the concentration of glucose (sugar). When the pancreas is unable to se...
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Gestational diabetes is a condition that occurs during pregnancy . Like other forms of diabetes, gestational diabetes involves a defect in the way the body processes and uses sugars (glucose) in the diet. Gestational diabetes, however, has a numbe...
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Obesity is an abnormal accumulation of body fat, usually 20% or more over an individual's ideal body weight. Obesity is associated with increased risk of illness, disability, and death. The branch of medicine that deals with the study and treatmen...
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Obesity is a term used to describe body weight that is much greater than what is considered healthy. If you are obese, you have a much higher amount of body fat than is healthy or desirable. Adults with a body mass index (BMI, calculated as weight...
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Obesity is the condition of having an excessive accumulation of fat in the body, resulting in a body weight more than 20% above the average for height, age, sex, and body type, and in elevated risk of disability, illness, and death.
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Vertical sleeve gastrectomy is surgery to help with weight loss. The surgeon removes a large portion of your stomach. The smaller stomach limits the amount of food you can eat by making you feel full after eating small amounts of food. See also: G...
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Obesity , defined as a body mass index of 30 or greater, is an epidemic in the United States and other industrialized nations, and it is rapidly becoming one in developing nations. As countries transition to westernized lifestyles, obesity tends t...
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Obesity is an abnormal accumulation of body fat, usually 20% or more over an individual's ideal body weight. Obesity is associated with increased risk of illness, disability, and death.
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Obesity is an abnormal accumulation of body fat, usually 20% or more over an individual's ideal body weight. Obesity is associated with increased risk of illness, disability, and death .
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Term describing a condition where the ratio of body fat to total body mass is higher than accepted norms. Obesity is a relative term used to describe the condition where the ratio of body fat, which is measurable, to total body mass is higher than...
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Obesity is an abnormal accumulation of body fat, usually 20 percent or more over an individual's ideal body weight. Obesity is associated with increased risk of illness, disability, and death. The branch of medicine that deals with the study and t...
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Colorectal cancer is a malignant neoplasm that affects the larger, lower portion of the intestinal tract. About two-thirds of such cancers occur in the colon, mainly in the sigmoid portion, and one-third occur in the rectum or at the recto-sigmoid...
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Colon, or colorectal, cancer is cancer that starts in the large intestine (colon) or the rectum (end of the colon. Other types of cancer can affect the colon, such as lymphoma, carcinoid tumors, melanoma, and sarcomas. These are rare. In this arti...
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Colorectal cancer is a malignancy of the colon (bowel) and/or rectum. It is the second most common cause of cancer-related death in the United States, and is diagnosed in more than 130,000 new patients annually.
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The digestive system is made up of the esophagus (food pipe), stomach , and the small and large intestines. The upper 5–6 feet (1.5–1.8 m) of the large intestine is the colon, and the last 6–8 inches (15–20 cm) of the colon is the rectum. Colorect...
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In populations, blood pressures fit a normal distribution, but the attendant risks of heart disease and stroke increase curvilinearly with increasing levels of blood pressure, without any obvious breakpoint ( Fig. 63-1 ). Thus, the separation of normal from high blood pressure is arbitrary, and the definition of hypertension has been a moving target.
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Blood pressure is the force with which blood pushes against the artery walls as it travels through the body. Like air in a balloon, blood fills arteries to a certain capacity—and just as too much air pressure can cause damage to a balloon, too muc...
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Hypertension is the term used to describe high blood pressure. Blood pressure readings are measured in millimeters of mercury (mmHg) and usually given as two numbers. For example, 120 over 80 (written as 120/80 mmHg. The top number is your systoli...
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The following Clinical Topic Tour provides an overview of hypertension (HTN) and was adapted from materials published by the NHLBI.
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Also known as high blood pressure, a condition in which too much force is exerted by the blood as it travels through the body's arteries. There are two types of hypertension: primary and secondary. Primary, or essential, hypertension is caused by ...
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Hypertension is an independent risk factor for coronary artery disease (CAD) and stroke, leading causes of morbidity and mortality in North America. Concern has been raised that there is inadequate outpatient detection, evaluation, and treatment of hypertension, and that this is resulting in increased hospital admissions with complications of untreated hypertension: heart failure, and end-stage renal disease .
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Hypertension is the medical term for high blood pressure. Blood pressure is the force of blood pushing against the walls of arteries as it flows through them. Arteries are the blood vessels that carry oxygenated blood from the heart to the body's ...
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The National High Blood Pressure Education Program (NHBPEP) was established in 1972 by the National Institute of Health to translate research results on the health hazards of high blood pressure into clinical and public health practice. Before 190...
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Hypertension is high blood pressure. Blood pressure is the force of blood pushing against the walls of arteries. Arteries are the blood vessels that carry oxygenated blood from the heart to the body's tissues.
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Hypertension is high blood pressure. Blood pressure is the force of blood pushing against the walls of arteries as it flows through them. Arteries are the blood vessels that carry oxygenated blood from the heart to the body's tissues.
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Hypertension is high blood pressure . Blood pressure is the force of blood pushing against the walls of arteries as it flows through them.
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