Hypertension or high blood pressure is a chronic medical condition in which the pressure or tension in the arteries is elevated. It is often called the "silent disease" as it has no symptoms and can go undetected for years, damaging your tissues and vital organs. If you have hypertension, your heart works harder than it should to pump blood to your tissues and organs. If this pressure isn't controlled, your heart enlarges and your arteries become scarred and hardened. Eventually, your overworked heart may not be able to pump and transport blood properly through these arteries. This can result in heart disease, kidney disease, the hardening of the arteries, eye damage, and stroke. Hypertension can be caused by a number of factors including your genes, underlying disease and lifestyle.
The earliest surviving work with a detailed reference to diabetes is that of Aretaeus of Cappadocia (2nd or early 3rd century CE). He described the symptoms and the course of the disease, which he attributed to the moisture and coldness, reflecting the beliefs of the "Pneumatic School". He hypothesized a correlation of diabetes with other diseases, and he discussed differential diagnosis from the snakebite which also provokes excessive thirst. His work remained unknown in the West until 1552, when the first Latin edition was published in Venice.
Blood pressure was traditionally measured using a stethoscope and a blood pressure cuff (called a sphygmomanometer), a device that includes a cuff, a bulb, and a pressure dial that reads the pressure in millimeters of mercury (mm Hg). This is still considered the best method but, more commonly, devices that combine a blood pressure cuff with electronic sensors are used to measure blood pressure. http://4.bp.blogspot.com/-du4BiwBwloo/UbfEdfaxaSI/AAAAAAAABa4/ikJjD8ruIkw/s1600/claire-kerslake-graphic-for-renew-promo-post-with-logo-final.jpg
The prevalence of metabolic syndrome increases with age, with about 40% of people older than 60 years meeting the criteria.  However, metabolic syndrome can no longer be considered a disease of only adult populations. Alarmingly, metabolic syndrome and diabetes mellitus are increasingly prevalent in the pediatric population, again in parallel with a rise in obesity. 
Mark A Silverberg, MD, MMB, FACEP Assistant Professor, Associate Residency Director, Department of Emergency Medicine, State University of New York Downstate College of Medicine; Consulting Staff, Department of Emergency Medicine, Staten Island University Hospital, Kings County Hospital, University Hospital, State University of New York Downstate Medical Center
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.
Blood pressure rises with aging and the risk of becoming hypertensive in later life is considerable. Several environmental factors influence blood pressure. High salt intake raises the blood pressure in salt sensitive individuals; lack of exercise, obesity, and depression can play a role in individual cases. The possible roles of other factors such as caffeine consumption, and vitamin D deficiency are less clear. Insulin resistance, which is common in obesity and is a component of syndrome X (or the metabolic syndrome), is also thought to contribute to hypertension. One review suggests that sugar may play an important role in hypertension and salt is just an innocent bystander.
In the US, 84.1 million adults—more than 1 in 3—have prediabetes, and 90% of them don’t know they have it. Prediabetes is a serious health condition where blood sugar levels are higher than normal, but not high enough yet to be diagnosed as diabetes. Prediabetes increases your risk for type 2 diabetes, heart disease, and stroke. But through the CDC-led National Diabetes Prevention Program, you can learn practical, real-life changes that can cut your risk for developing type 2 diabetes by as much as 58% (71% if you’re 60 or older).