Logo c4c345c0f2f7ba2a15948ce307a630a6d8edf8f88a547d69336323a7dfa75bdc

Cholesterol: the good and the bad

Published: March 24, 2017

The structure of cholesterol
The structure of cholesterol

Cholesterol, only present in animals, belongs to a group of lipids known collectively as sterols.

Because of its negative association with heart disease, cholesterol has come to be considered a nutrient to be avoided.
While following a vegan diet can eliminate dietary cholesterol you cannot eliminate cholesterol entirely from your body.
Cholesterol is synthesized in your liver cells from pieces of carbohydrate, protein and other lipids and serves as the basis for many other important compounds required for your body to function.
Your liver makes between 800 to 1500 mg of cholesterol each day which is usually much more than you would consume in your diet.
Cholesterol forms the basis of:

  • Vitamin D required for calcium absorption, bone mineralization, and may be involved in your immune system function, brain and nervous system function, reproductive organs, pancreatic tissue, and skin, muscles and cartilage
  • Bile acids which are required for digestion of fats and lipids
  • Adrenal hormones such as cortisol which is released in response to stress and acts to increase blood-glucose levels, aldosterone which regulates blood pressure, and epinephrine and norepinephrine which stimulate your flight or fight response
  • Steroid sex hormones such as, testosterone, estrogen and progesterone which are key to reproduction and expression of male and female characteristics
  • HDL (high density lipoproteins) and LDL (low density lipoproteins)  

As well as forming the basis of these compounds cholesterol is a necessary component of cell membranes which accounts for about 90% of all of you body cholesterol.

Apples contain pectin a fibre which may help reduce cholesterol
Apples contain pectin a fibre which may help reduce cholesterol
In addition to endogenous (within the body) cholesterol, cholesterol is obtained exogenously (outside of the body) from foods from animals such as beef, lamb, pork, poultry, fish, eggs and most dairy products.
Dairy products made from skimmed milk contain very little or no cholesterol.
During your digestion process dietary cholesterol...link to the full article to learn more.

Related Topics

Diet  Health  Nutrients  Fats  Your Body 

References

1.
Gropper, S.S., Smith, J.L. & Groff, J.L. (2005). Advanced Nutrition and Human Metabolism (4thEd.). Belmont, CA: Thomson Wadsworth.
2.
Whitney, E. & Rady Rolfes, S. (2005). Understanding Nutrition. Belmont, CA: Thomson Wadsworth
3.
Statistics Canada