Cholesterol – the Rest of the Story

We hear it in the news, we hear it from our doctors, we hear about it from all kinds of sources cholesterol needs to be lowered! It’s almost as though cholesterol were some evil entity that must be conquered at all costs, or shouldn’t be in your body at all.
That is why I’m writing about it. While high cholesterol has been linked to cardiovascular disease in many studies, I felt that you deserved to also knowthe rest of the story.

What is cholesterol?
Cholesterol is a lipid (fat) found in cell membranes. It is also classified as a sterol, which comes from the words steroid and alcohol. It is the principal sterol made in the body.

What does it do?
It is a necessary building block for cell membranes, and promotes the proper permeability and fluidity of those membranes over a wide range of temperatures.
Some research suggests that it might act as an antioxidant.[1]
It aids in absorption and metabolism of fat-soluble vitamins, including vitamin A, D, E and K.
It is the major precursor in the synthesis of vitamin D, as well as several hormones, including cortisol, aldosterone, progesterone, various estrogens, testosterone, and their derivatives
It may be involved in cell signaling processes – assisting in the formation of lipid raftsin plasma membranes and reducing plasma membrane permeability to hydrogen ions and sodium ions[2]
It’s an important part of bile production, which is needed for digestion of most dietary fats.
Bile salts also having bactericidal actions on many invading microbes that might enter the body with food.

Where does it come from?
Most cholesterol is made inside the cells of your body by something called the endoplasmic reticulum (ER). About 20 to 25% of the daily cholesterol produced takes place in the liver.
Of the cholesterol that is put into the intestines from bile production, 92 to 97% is reabsorbed and recycled, with the help of intestinal bacteria.
Dietary cholesterol has long been blamed for increased cholesterol levels in the body, with eggs being a popular food to blame, but there are studies coming out that contradict this commonly held belief. One study, done in Thailand, showed that increasing the consumption of eggs in the diet actually decreased overall cholesterol at the same time as increasing the goodcholesterol.[3]

HDL and LDL
When you are tested for cholesterol levels they are measuring the proteins that transport cholesterol. Since cholesterol isn’t water-soluble it needs a vehicle to travel through the bloodstream. It’s sort of like counting cars (LDL and HDL among others) containing passengers (cholesterol) on a highway (in the bloodstream).
VLDL (Very Low Density Lipoprotein) transports cholesterol to the peripheral tissues.
LDL (Low Density Lipoprotein), badstuff, transports cholesterol (approximately 75% of the body’s cholesterol) through the blood to various parts of the body, and is associated with atheromatous disease of the arteries.
HDL (High Density Lipoprotein), goodstuff, collects cholesterol and brings it back to the liver where it is either excreted or recycled for later use.

Effects on Health
Despite aggressive treatment of high cholesterol in the US, cardiovascular disease and death is still a huge problem. There are even some studies that suggest that reducing cholesterol levels in people over the age of 50 may actually increase mortality risks, and not just from cardiovascular disease.[4]
So, now you knowthe rest of the story, and although science has increased our understanding of cholesterol, there is still much that isn’t known.

Some thoughts
Too much of a good thing is still too much.
It’s obvious that we need cholesterol for a variety of important functions in the body. We also know that cardiovascular disease has become a huge issue in the last 100 years or so, and our modern western diet has changed significantly in that time as well.
Therefore, eating a healthy (along with various lifestyle changes such as exercise) and varied diet, rich in colourful fruits, nuts, seeds, cereals, and vegetables, is probably one of the best things you can do for cholesterol balance and cardiovascular health. Many plants contain sterols and stanols, which compete for absorption with dietary and biliary cholesterol and thus can decrease the absorption of cholesterol by approximately 50%. The soluble fiber in these foods, as well as psyllium, oat bran, barley, and flax, can also be a benefit in management of cholesterol in the body.
Reducing dietary fat intake may reduce the need for cholesterol containing metabolites in the digestion and utilization of fats.
Many medicinal herbs are used in cholesterol management. Some of these include, Ashwagandha (Withania somnifera)[5] , Red Yeast Rice (Monascus purpureus)[6], Dandelion (Taraxicum off.)[7], Garlic (Allium sativum)[8], dark chocolate[9], and Flax[10].

–Elizabeth Walker, CHT, RH

As the Clinical Herbal Therapist at Amber Leaf Wellness, Elizabeth helps people who are frustrated and disillusioned by their conventional health care, and are seeking fewer side effects, fewer drugs, and want natural and effective options that work even in chronic health conditions. To learn more about making Amber Leaf Wellness part of your health care team go to www.amberleafwellness.ca

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[1] Smith LL (1991). “Another cholesterol hypothesis: cholesterol as antioxidant”. Free Radic. Biol. Med. 11 (1): 47?