Unfortunately, a great majority of people in the world has the problem with obesity. It is not only the matter of appearance that an obese person must deal with, but many complications that can arouse from this condition must also be considered. A body needs calories that are the source of the energy and that are necessary for the proper body functioning. Obesity occurs when one eats much more calories than the body needs and does not do anything to burn the excess calories.
Obesity can cause serious medical conditions, such as heart attacks, stroke, hypertension, type 2 diabetes, insulin resistance, colon cancer, and non-alcoholic fatty liver disease, as well as gout, gallstones and sleep apnea. When a person gains weight, his/her blood vessels become less elastic and heart rate may increase. The higher amounts of blood are needed because fatty tissues need more nutrients and oxygen. Because of this, the higher amounts of blood make the pressure on the arteries walls and thus blood pressure is increased. Furthermore, obesity causes high levels of insulin in the body and insulin retains water and sodium. Due to it, hypertension appears. Insulin has the role to regulate and control the blood sugar, so obesity causes the insulin resistance and sugar stays in the blood, thus increasing the level of the blood sugar. Furthermore, the increased blood sugar causes certain complications in kidneys, eyes, blood vessel, and heart.
When a person is obese, much more of bad cholesterol than good cholesterol is carried in the blood. High levels of cholesterol also may cause reducing of the elasticity of the blood vessels, narrowing of the blood vessels and reducing of blood flow. Atherosclerosis is the medical term for fatty deposits in arteries and this medical condition may lead to angina and total blockage of blood flow to heart, thus inducing heart attack, stroke or paralysis.
One of the complications of obesity is osteoarthritis, which occurs as the consequence of the increased pressure on the joints such as the knee, hip and lower back. Joint pain, stiffness and the breakdown of cartilage may occur. Moreover, obesity causes increased production of uric acid. The accumulation of uric acid crystals in joints leads to a type of arthritis known as gout. Sleep apnea occurs because of much fat in the neck in which person stops breathing for short periods during sleep. Drowsiness and tiredness during the day happen because of frequent wakening during the night. Because of all these complications, one must take care about the amount of the calories taken during a day.