A lipid is any of various organic compounds that are insoluble in water. They include fats, waxes, oils, hormones, and certain components of membranes and function as energy-storage molecules and chemical messengers.
The four main groups of lipids include:
Some examples of lipids include butter, ghee, vegetable oil, cheese, cholesterol and other steroids, waxes, phospholipids, and fat-soluble vitamins. All these compounds have similar features, i.e. insoluble in water and soluble in organic solvents, etc.
Within the body, lipids function as an energy reserve, regulate hormones, transmit nerve impulses, cushion vital organs, and transport fat-soluble nutrients.
The term "lipids" includes cholesterol and triglycerides, although there are other types of lipids, too. Standard lipid blood tests include a measurement of total cholesterol, low-density lipoprotein (LDL) and high-density lipoprotein (HDL) cholesterol, and triglycerides.
Lipids perform three primary biological functions within the body: they serve as structural components of cell membranes, function as energy storehouses, and function as important signaling molecules. The three main types of lipids are triacylglycerols (also called triglycerides), phospholipids, and sterols.
Although the term "lipid" is sometimes used as a synonym for fats, fats are a subgroup of lipids called triglycerides. Lipids also encompass molecules such as fatty acids and their derivatives (including tri-, di-, monoglycerides, and phospholipids), as well as other sterol-containing metabolites such as cholesterol.
Although the molecular structures of steroids differ from that of triglycerides and phospholipids, steroids are classified as lipids based on their hydrophobic properties. Cholesterol is a type of steroid in animal cells' plasma membrane.
The lipids are for the most part insoluble in water, and in the blood they do not occur in the free state but are associated with each other and with proteins as complex water-soluble molecules (lipoproteins) and as emulsion particles (chylo- microns).
Cholesterol is a type of blood fat, and blood fats are known as lipids. Cholesterol and other lipids are carried in the blood attached to proteins, forming tiny spheres, or "parcels" known as lipoproteins.
Most people have high levels of fat in their blood because they eat too much high-fat food. Some people have high fat levels because they have an inherited disorder. High lipid levels may also be caused by medical conditions such as diabetes, hypothyroidism, alcoholism, kidney disease, liver disease and stress.
What are the warning signs of high cholesterol?
Sep 9, 2021
Common symptoms of these conditions include:
A few changes in your diet can reduce cholesterol and improve your heart health:
Lipid metabolism disorders, such as Gaucher disease and Tay-Sachs disease, involve lipids. Lipids are fats or fat-like substances. They include oils, fatty acids, waxes, and cholesterol. If you have one of these disorders, you may not have enough enzymes to break down lipids.
High-cholesterol foods to avoid
Oct 13, 2021
The fiber and potassium in bananas can help lower cholesterol and blood pressure. If you're a fan of bananas, your cholesterol levels will thank you. Like all fruits, bananas are a good source of fiber, especially soluble fiber. Eating more of this type of fiber has been found to help lower cholesterol.
Here are some of the best morning foods for improving your numbers.
Replacing meats high in saturated fat with healthier options, like fish, is a smart tactic to improve cholesterol levels. Certain types of fish also provide heart-healthy omega-3 fatty acids. Good choices include salmon, albacore tuna (fresh and canned), sardines, lake trout and mackerel.