Metabolic syndrome is believed to develop due to insulin resistance. Insulin is a hormone that is produced by the pancreas (an organ located near stomach). It helps blood sugar enter cells, where it is used for energy. With insulin resistance, the body fails to recognize the insulin that is produced, causing the sugar to accumulate in the blood instead of being absorbed into other cells. Because blood sugar levels remain high, the pancreas keeps producing more and more insulin, leading to high insulin levels. While blood sugar levels are not high enough to be classified as diabetes, they do increase the risk of developing serious health problems.
Endocrinology is the specialty of medicine that deals with hormone disturbances, and both endocrinologists and pediatric endocrinologists manage patients with diabetes. People with diabetes may also be treated by family medicine or internal medicine specialists. When complications arise, people with diabetes may be treated by other specialists, including neurologists, gastroenterologists, ophthalmologists, surgeons, cardiologists, or others.
Although treatment of sleep apnea with continuous airway positive pressure (CPAP) would logically seem to improve CV outcomes and hypertension, studies evaluating this mode of therapy have been disappointing. A 2016 review of several studies indicated that CPAP either had no effect or a modest BP-lowering effect.  Findings from the SAVE study showed no effect of CPAP therapy on BP above usual care.  It is likely that patients with sleep apnea have other etiologies of hypertension, including obesity, hyperaldosteronism, increased sympathetic drive, and activation of the renin/angiotensin system that contribute to their hypertension. Although CPAP remains an effective therapy for other aspects of sleep apnea, it should not be expected to normalize BP in the majority of patients.
Metabolic syndrome promotes coronary heart disease through several mechanisms. It increases the thrombogenicity of circulating blood, in part by raising plasminogen activator type 1 and adipokine levels, and it causes endothelial dysfunction.  Metabolic syndrome may also increase cardiovascular risks by increasing arterial stiffness.  Additional mechanisms include oxidative stress,  which has been associated with numerous components of metabolic syndrome. 
But, the metabolism compensates. This person starts feeling hungry all the time. Their energy begins to suffer, and they feel cravings for sweet, salty, and fatty foods. This makes it harder for them to comply. But worse than that, depending on their individual response to the law of metabolic compensation, their metabolism has now put on the brakes, slowing their daily calorie burn rate by between 200 and 800 calories per day.
^ Jump up to: a b Brook RD, Appel LJ, Rubenfire M, Ogedegbe G, Bisognano JD, Elliott WJ, Fuchs FD, Hughes JW, Lackland DT, Staffileno BA, Townsend RR, Rajagopalan S, American Heart Association Professional Education Committee of the Council for High Blood Pressure Research, Council on Cardiovascular and Stroke Nursing, Council on Epidemiology and Prevention, and Council on Nutrition, Physical, Activity (Jun 2013). "Beyond medications and diet: alternative approaches to lowering blood pressure: a scientific statement from the American Heart Association". Hypertension. 61 (6): 1360–83. doi:10.1161/HYP.0b013e318293645f. PMID 23608661.
Hypertension is one of the most common worldwide diseases afflicting humans and is a major risk factor for stroke, myocardial infarction, vascular disease, and chronic kidney disease. Despite extensive research over the past several decades, the etiology of most cases of adult hypertension is still unknown, and control of blood pressure is suboptimal in the general population. Due to the associated morbidity and mortality and cost to society, preventing and treating hypertension is an important public health challenge. Fortunately, recent advances and trials in hypertension research are leading to an increased understanding of the pathophysiology of hypertension and the promise for novel pharmacologic and interventional treatments for this widespread disease.
Diabetes: The differences between types 1 and 2 There are fundamental differences between diabetes type 1 and type 2, including when they might occur, their causes, and how they affect someone's life. Find out here what distinguishes the different forms of the disease, the various symptoms, treatment methods, and how blood tests are interpreted. Read now
Blood pressure goals are generally set lower than 130/80. Some blood pressure medications offer more benefits than simply lowering blood pressure. For example, a class of blood pressure drugs called ACE inhibitors has been found to also reduce the levels of insulin resistance and actually deter the development of type 2 diabetes. This is an important consideration when discussing the choice blood pressure drugs in the metabolic syndrome. https://i.ytimg.com/vi/xQRE2ht3elA/maxresdefault.jpg
When it comes to laboratory values, numbers like blood glucose and A1C levels are commonly checked. Less often, doctors order a test for your fasting insulin level; yet this test can help predict your risk of developing prediabetes and metabolic syndrome. Insulin plays a key role in metabolism, and high insulin levels can promote obesity, stimulate hunger, and increase the storage of fat.
The term "diabetes" or "to pass through" was first used in 230 BCE by the Greek Apollonius of Memphis. The disease was considered rare during the time of the Roman empire, with Galen commenting he had only seen two cases during his career. This is possibly due to the diet and lifestyle of the ancients, or because the clinical symptoms were observed during the advanced stage of the disease. Galen named the disease "diarrhea of the urine" (diarrhea urinosa).
In the United States, metabolic syndrome has a high prevalence in African Americans, particularly African American women, and this has been attributed to the higher prevalence of obesity, hypertension, and diabetes in this population.  However, the highest age-adjusted prevalence of metabolic syndrome in the United States is found in Mexican Americans, approximately 31.9% of whom had the condition (compared with 27% of the general population) in a 1988-1994 survey. 
^ Jump up to: a b Picot J, Jones J, Colquitt JL, Gospodarevskaya E, Loveman E, Baxter L, Clegg AJ (September 2009). "The clinical effectiveness and cost-effectiveness of bariatric (weight loss) surgery for obesity: a systematic review and economic evaluation". Health Technology Assessment. 13 (41): 1–190, 215–357, iii–iv. doi:10.3310/hta13410. PMID 19726018.