What is cholesterol?
The same cholesterol contributes to the synthesis of hormones such as testosterone and estrogen. On the other hand, a high level of cholesterol increases the risk of cardiovascular disease, but even a very low figure of cholesterol in the blood is harmful. According to a study, people with cholesterol levels well below normal have difficulties in concentrating and remembering information.
A normal level of cholesterol in the body is essential for the skin, where it is converted into vitamin D. Also, about cholesterol is known to help carbohydrate metabolism and is essential for the production of adrenal hormones.
Literature talks about useful cholesterol and harmful cholesterol.
Lipoproteins carry cholesterol in the blood:
low density lipoproteins (LDL) carry 65% of total blood cholesterol; this complex determines cholesterol deposits inside blood vessels. This type of cholesterol is the so-called damaging cholesterol.
Very low density lipoproteins (VLDL), the forerunner of LDL, carries approximately 15% of total blood cholesterol, but are necessary for the liver to produce LDL.
High density lipoprotein (HDL) carries about 20% of total blood cholesterol. Being composed mainly of lecithin, high density lipoproteins are the ones who destroy the cholesterol deposits on blood vessels and provide cholesterol without blocking arteries. This cholesterol is the useful cholesterol.
In this context, it is all about the ratio of LDL (bad cholesterol) and HDL (good cholesterol). Total blood cholesterol level should be lower the value of 200 mg / dl. If this value increases, you should take preventive measures before they reach a risky level of cholesterol (more than 250 mg / dl). Maintaining daily ration of fat intake below 20%, maximum 30% of total calories is vital for keeping cholesterol levels within normal limits.
The organism produces its own cholesterol. If patients consume foods containing too much fat, cholesterol deposits appear on the blood vessels. Cholesterol deposits on blood vessels causes narrowing of the arteries. Finally, you can reach ischemia, myocardial infarction and stroke (stroke).
People absorb Daily approximately 0.5 grams of cholesterol, which means 20% -30% cholesterol in the blood. Liver tolerates a daily amount of 1 to 2 grams of cholesterol. Since the body produces cholesterol alone, it means that a high cholesterol level is very possible to happen. The level of cholesterol increases due to overweight, lack of exercise and by diabetes.
Laboratory analyses determine, besides cholesterol level, the triglycerides in the blood. Between the two types of fats (triglycerides and cholesterol), there is a relationship of interdependence: Although the high level of one does not necessarily involve large amounts of other, lower triglyceride content seems to help reduce cholesterol. Triglycerides are fats that compose the simple fat. Their growth is driven by the same causes that produce fat and increase cholesterol, but triglycerides in excess show a much higher risk for arterial sclerosis.
The normal value of triglycerides is between 50-150 mg/100 ml. Triglycerides are fats coming mainly from food. These arise mainly from transformation of sugars in the liver. Like excess cholesterol, excess triglycerides represent heart and artery health threat, because they favor plaque formation. This is apparent in the case of excessive consumption of sugar, alcohol and tobacco, as well as in obese individuals and / or diabetic. For some women, contraceptive pill plays a major role in increasing levels of triglycerides. Normal value is below 1.60 g / l.
The total amount of cholesterol in the body is approximately 145 grams. Most are found in cell membranes, where it acts as a stabilizing agent. Approximately one third are found in membranes of the nervous system – brain, spinal cord.
The rest participate in the formation of bile acids, sex hormones and helps the production of vitamin D. If you eat foods containing too much fat, cholesterol begins to deposit in the blood vessels leading to narrowing of the arteries. In the end this can lead to angina pectoris or myocardial infarction.
High cholesterol than normal is an important risk factor, sometimes years before the development of cardiovascular disease and stroke. Therefore, high cholesterol is a risk factor for stroke especially for ischemic cardiomyopathy, but also for many other disorders.
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