Insulin resistance. Insulin is a hormone that helps your body use glucose -- a simple sugar made from the food you eat -- as energy. In people with insulin resistance, the insulin doesn't work as well, so your body keeps making more and more of it to cope with the rising level of glucose. Eventually, this can lead to diabetes. Insulin resistance is closely connected to having excess weight in the belly.
^ Mente, Andrew; O'Donnell, Martin; Rangarajan, Sumathy; Dagenais, Gilles; Lear, Scott; McQueen, Matthew; Diaz, Rafael; Avezum, Alvaro; Lopez-Jaramillo, Patricio; Lanas, Fernando; Li, Wei; Lu, Yin; Yi, Sun; Rensheng, Lei; Iqbal, Romaina; Mony, Prem; Yusuf, Rita; Yusoff, Khalid; Szuba, Andrzej; Oguz, Aytekin; Rosengren, Annika; Bahonar, Ahmad; Yusufali, Afzalhussein; Schutte, Aletta Elisabeth; Chifamba, Jephat; Mann, Johannes F E; Anand, Sonia S; Teo, Koon; Yusuf, S (July 2016). "Associations of urinary sodium excretion with cardiovascular events in individuals with and without hypertension: a pooled analysis of data from four studies". The Lancet. 388 (10043): 465–75. doi:10.1016/S0140-6736(16)30467-6. PMID 27216139.
Because metabolic syndrome and insulin resistance are closely tied, many healthcare providers believe that insulin resistance may be a cause of metabolic syndrome. But they have not found a direct link between the two conditions. Others believe that hormone changes caused by chronic stress lead to abdominal obesity, insulin resistance, and higher blood lipids (triglycerides and cholesterol).
To treat diabetic retinopathy, a laser is used to destroy and prevent the recurrence of the development of these small aneurysms and brittle blood vessels. Approximately 50% of patients with diabetes will develop some degree of diabetic retinopathy after 10 years of diabetes, and 80% retinopathy after 15 years of the disease. Poor control of blood sugar and blood pressure further aggravates eye disease in diabetes.
The exact cause of metabolic syndrome is unknown. It is frequently influenced by diet and lifestyle, but also seems to be genetically driven. As stated, many features of metabolic syndrome are associated with “insulin resistance,” which causes cells to lose their sensitivity to insulin, the hormone needed to allow blood sugar to enter cells for use as fuel. As glucose levels in the blood increase, the pancreas tries to overcompensate and produce even more insulin, which ultimately leads to the characteristic symptoms of metabolic syndrome. When insulin levels spike, a stress response occurs that leads to elevations in cortisol, the body’s long-acting stress hormone. This in turn creates an inflammatory reaction that if left unchecked begins to damage healthy tissue.
“Too often, doctors don’t set reasonable expectations,” says Lauren Harris-Pincus, RDN, of New York City. A blanket statement like "'Lose weight and go exercise' is not as motivating as 'If you lose a modest 5 percent of your body weight, you can make a significant impact on the important numbers like blood pressure, blood sugar, and cholesterol/triglycerides,'” Harris-Pincus says.
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High blood pressure is the most common chronic medical problem prompting visits to primary health care providers in USA. The American Heart Association estimated the direct and indirect costs of high blood pressure in 2010 as $76.6 billion. In the US 80% of people with hypertension are aware of their condition, 71% take some antihypertensive medication, but only 48% of people aware that they have hypertension adequately control it. Adequate management of hypertension can be hampered by inadequacies in the diagnosis, treatment, or control of high blood pressure. Health care providers face many obstacles to achieving blood pressure control, including resistance to taking multiple medications to reach blood pressure goals. People also face the challenges of adhering to medicine schedules and making lifestyle changes. Nonetheless, the achievement of blood pressure goals is possible, and most importantly, lowering blood pressure significantly reduces the risk of death due to heart disease and stroke, the development of other debilitating conditions, and the cost associated with advanced medical care.
A sustainable exercise program, for example 30 minutes five days a week is reasonable to start, providing there is no medical contraindication. (If you have any special concerns in this regard, check with your doctor first.) There is a beneficial effect of exercise on blood pressure, cholesterol levels, and insulin sensitivity, regardless of whether weight loss is achieved or not. Thus, exercise in itself is a helpful tool in treating metabolic syndrome.
While the lipid abnormalities seen with metabolic syndrome (low HDL, high LDL, and high triglycerides) respond nicely to weight loss and exercise, drug therapy is often required. Treatment should be aimed primarily at reducing LDL levels according to specific recommendations. Once reduced LDL targets are reached, efforts at reducing triglyceride levels and raising HDL levels should be made. Successful drug treatment usually requires treatment with a statin, a fibrate drug, or a combination of a statin with either niacin or a fibrate.
Metabolic syndrome is increasing in prevalence, paralleling an increasing epidemic of obesity. In the United States, where almost two thirds of the population is overweight or obese, more than one fourth of the population meets diagnostic criteria for metabolic syndrome.  In the United States, data from a 1999-2000 survey showed that the age-adjusted prevalence of metabolic syndrome among adults aged 20 years or older had risen from 27% (data from 1988-1994) to 32%. 
How to treat metabolic syndrome is controversial. Because there are several potential markers, the public health community has struggled with the decision of how best to define, diagnose and treat it. Nutritional approaches have generally been downplayed in favor of multiple medications that target the individual markers. Conventional recommendations tend to emphasize caloric restriction and reduced fat intake, even though metabolic syndrome can best be described as carbohydrate intolerance. The most effective treatment for metabolic syndrome is to control the intake of carbs, not fat. In fact, restricting dietary fat and replacing it with carbohydrate actually makes many of the problems of metabolic syndrome worse. The metabolic syndrome paradigm has therefore caused a great deal of distress—and pushback—among those advocating low-fat diets. For more on how to prevent metabolic syndrome, see How to Reduce Your Risk for Metabolic Syndrome.
Usually, there are no immediate physical symptoms of metabolic syndrome. People with metabolic syndrome do have a tendency to be overweight, especially around the abdomen – having an “apple shape.” Moreover, since this condition is associated with insulin resistance, individuals with metabolic syndrome may display some of the clinical features associated with an increase in the production of insulin. For instance, women may experience cysts on their ovaries (metabolic syndrome is associated with polycystic ovarian syndrome) and irregular periods. Individuals can have an increased incidence of skin tags, benign raised growths of skin that usually appear increases on the neck and back. In addition, they can exhibit acanthosis nigricans – a pigmentation of the skin, which appears discolored or dirty over the back of the neck and underarms.
Hypertension occurs in around 0.2 to 3% of newborns; however, blood pressure is not measured routinely in healthy newborns. Hypertension is more common in high risk newborns. A variety of factors, such as gestational age, postconceptional age and birth weight needs to be taken into account when deciding if a blood pressure is normal in a newborn.
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