Cholesterol is a steroid substance, found in membranes and blood plasma of all cells in mammals. It can also be found in other eukaryotes in smaller amounts, but prokaryotes don’t have any cholesterol.
Cholesterol is necessary to maintain adequate fluidity and membrane permeability, and for synthesis of all steroid hormones in the body, bile acids and fat soluble vitamins, such as vitamins D, E, K and A. Recent studies point out that cholesterol might be an important antioxidant in thebody.
There are different types of cholesterol present in the body, including HDL (high-density lipoprotein), LDL (Low-density lipoprotein), VLDL (Very-low-density lipoprotein) and IDL (Intermediate-density lipoproteins) cholesterol.
HDL is often called “good” cholesterol, since its main role is to reduce the quantity of LDL cholesterol in the plasma. It is always good to have normal level of this type of cholesterol, and many people are advised to increase HDL in order to minimize LDL effects to the human body.
LDL is so-called “bad” cholesterol. Increased LDL cholesterol usually cause cholesterol accumulation in the walls of blood vessels, and lead to heart, arterial and vein problems. This type of cholesterol is necessary for our body, but is should be consumed in small amounts from the food.
Highlevel of cholesterol is one of the main indicators of many heart-related problems, along with the atherosclerosis, stroke and peripheral vascular disease. It doesn’t show any problems for a long time, but sometimes it may cause cholesterol buildup in the tendons and in the skin or other eye issues, like discoloration of cornea or yellow patches on the eyelids.
Manytimes people need to know the exact amount of cholesterol in their food. Some foods are rich in cholesterol and many doctors will advise not to use these foods in excess amounts.
Poachedor boiled eggs are very rich in cholesterol and contain over 450mg of cholesterol in just 100g. The same portion of cod fish contains even more cholesterol, about 500mg, while salted butter contains around 250mg of cholesterol per 100g. Steamed whiting, salami, chicken meat and lard are also high in cholesterol. Sponge pudding and meringue pie contain plenty of cholesterol, too and should be consumed only in small quantities.
Otherfood is suitable for people with heightened cholesterol, since it is very low in this substance. These include: bread, scones, Irish stew, hamburgers, scrambled eggs or egg omelet, scallops, oysters, and margarine. Vegetables and fruits are also known as the groceries that contain extremely small amounts of cholesterol.