Jim McAfee's Blog Spot

Showing posts with label fat. Show all posts
Showing posts with label fat. Show all posts

Monday, April 15, 2024

Fat and Cholesterol

 The Secret Life of Fat


Fat and weight gain is a topic of interest to the majority of the population, particularly as we age. A book with the above title was written by Sylvia Tara. Among the interesting topics of discussion is the work of an Indian physician named Nikhil Dhurandhar. This researcher has repeatedly shown that viral infections can result in weight gains in animals and people. He found that a much higher number of people who were obese had antibodies to Adenovirus-36. This work has been difficult to get published because many doctors do not believe that viral or bacterial infections can cause weight gain.

It has been pretty well confirmed that bacteria can result in weight gain leading to obesity. Dr. Jeffrey Gordon conducted an experiment in which he raised one group of mice in sterile conditions and another with normal bacterial growth in the intestines. Food intake was identical but the mice with bacteria weighed more. The bacteria in the gut help break down food and extract nutrients from it. When the mice raised in a sterile environment were exposed to bacteria they had a 57% increase in percent of body fat!

Obese human beings tend to have increased numbers of Firmicutes bacteria which love diets high in carbohydrates and fats. Their numbers decrease when these types of foods are restricted. Thinner individuals have higher numbers of Bacteroidetes bacteria in the gut. These bacteria are not as efficient and making nutrients in food available for absorption. Their numbers increase when the diet is high in fruits and vegetables.




Thoughts on Cholesterol


One of the most frequent questions I am asked is about cholesterol levels. Current recommendations are for a total cholesterol level less than 200 mg/dl. It is also recommended that LDL or bad cholesterol be below 130 and HDL or good cholesterol be above 35. For every 1% increase in HDL levels risk of heart attack drops by 3-4%. While LDL is usually referred to as the "bad" cholesterol the worst cholesterol is lipoprotein(a) which carries a 10-fold greater risk than LDL for heart disease.

Another factor to consider is whether cholesterol is oxidized or not. All early studies were done feeding rabbits oxidized cholesterol out of a jar. In the 1970's similar studies were done with non-oxidized cholesterol. It was learned that oxidized cholesterol is 500 times more atherogenic than the product which is not oxidized. Anyone with an elevated cholesterol should try to avoid consuming highly oxidized cholesterol products like aged cheeses, powdered eggs, and highly heated fatty foods.

Supplementation with antioxidants can reduce the risk of cholesterol oxidation. Supplementation with Carotenoid Complex was shown to increase antioxidant activity in the blood five-fold in one study. Vitamins E and C are also protective here. Salmon oil is slippery and helps prevent cholesterol from sticking to blood vessel walls. Salmon oil is very effective at reducing triglyceride levels if they are elevated.

Statin drugs are loaded with side-effects. They block the synthesis of CoQ10 and other important compounds. Lipotropic Adjunct is a supplement designed to improve the ability of the liver to process fats. The meaning of the word breaks down as follows: lipo=fat, trophic= to eat, adjunct= helper. Lipotropics tend to lower cholesterol and triglycerides.

A well tested alternative to statins is niacin which is often used on a prescription basis. It does cause an uncomfortable flush, particularly in the beginning. Plant sterols also inhibit absorption of cholesterol. These are found in NeoLife Tre-en-en. A pharmaceutical form of sterols called policosanol has been shown to compare favorably to statin drugs in lowering cholesterol.

Heart disease can also be caused by low intake of magnesium or elevated homocysteine (which is addressed by lipotropic adjunct). Diabetes is a major risk factor for heart disease. Risk of diabetes is reduced by avoiding sugars, heavy fats, and making sure vitamin D levels are adequate.



Thursday, April 22, 2021

 The Diet That Poisons!

     I found the study I am about to describe quite startling. Perhaps you will too. Researchers placed 8 healthy subjects on a Western-style diet for one month. The diet contained 40% fat, not unusual for the average American. By the end of 30 days the levels of inflammatory toxins in the blood had increased by 71%. When the subjects were put on a diet that was only 20% fat inflammatory toxins in the blood dropped by 31% in a month.
     The researchers in this study were measuring lipopolysaccharide (LPS), a highly toxic product of the cell walls of bacteria. Accumulation of this compound is called endotoxemia because the toxins are part of the bacteria themselves rather than something the bacteria produce and release into the environment into which they live. The high fat diet actually promoted the growth of bacteria containing this substance.
     Physician David Perlmutter refers to LPS as "the incendiary device." He writes, "If there were ever a clear biological villain that flips on inflammatory pathways in the body, it would be lipopolysaccaride." It "induces a violent inflammatory response in animals if it finds its way into the bloodstream." LPS has been implicated in Alzheimer's, autism, depression, obesity, metabolic resistance, inflammatory disorders, and intestinal permeability.
     One animal study found that palm oil resulted in more endotoxemia related inflammation than did milk fat, sunflower or safflower oils in mice. This should serve as a warning that while palm oil has beneficial ketones which can improve brain health, an excess could be harmful. 
     The bottom line is consume only quality fats and these in moderation.
References:
Pendyala, Swaroop, et al., A high-fat diet is associated with endotoxemia that originates from the gut, Gastroenterology. 2012 May ; 142(5): 1100-1101.
Perlmutter, David, Brain Maker, New York: Little, Brown and Company, 2015, 56-60.
Laugerette, Fabiene, et al., Oil composition of high-fat diet affects metabolic inflammation differently in connection with endotoxin receptors in mice, American Journal of Physiology Endocrinology and Metabolism, February 2012;302(3):E374-386.