Facts about Cholesterol: Cholesterol is related to vitamin D and steroidal hormones, such as cortisone and sex hormones.
Dietary Cholesterol is found in the foods eaten. It is found only in foods of animal origin, never in plant sources.
Serum (blood) Cholesterol flows through the bloodstream. Cholesterol is essential for certain body components such as hormones, cell walls and various functions. Therefore your body manufactures most of its blood cholesterol. Some is also absorbed through the foods you eat.
What LDL and HDL Mean?
Digestion of Fat: During digestion, carbohydrates and proteins are dealt with first. By the time fat reaches the small intestine, it receives all the attention. Bile is squirted into the mixture to emulsify or break up the fat globules, allowing enzymes to attack the chemical bonds of the triglycerides. Fats are digested and broken down into fatty acids and glycerol, and pass into the intestinal cells.
Since you already know fat is not soluble in water, it needs a special transport system to move with blood and other body fluids: Fat can only move with helping protein particles, called lipoproteins.
There are 4 types of lipoproteins with very distinct jobs:
- Chylomicrons are made by the intestines for transporting “new” fat to the body’s cells. These carry mostly triglycerides.
- Very-Low-Density-Lipoproteins (VLDL) are made by the intestines and liver and transport fats around the body. These carry mostly triglycerides.
- Low-Density Lipoproteins (LDL) are made by the liver to carry cholesterol to the body’s cells and tissues, and may form deposits on the walls of arteries and other blood vessels. They are therefore considered the lazy, or “bad,” cholesterol. The goal is to have an LDL level of < 100 milligrams per dL. What does your body need to make LDL’s? How is the Liver programmed to know when and how many LDL’s to make?
- High-Density Lipoproteins (HDL) pick up and carry excess cholesterol from artery walls and bring it back to the liver for processing and removal. They are therefore considered the healthy, or “good,” cholesterol. The goal is to have an HDL level of >45 milligrams per dL. They clean up the dirty work left behind by LDL, but why have we evolved in this way. Normally systems in our body work together, they don’t eradicate the job of another.
THINK L= LAZY H=HEALTHY