Dr. Bob Rountree discusses Non-Alcoholic Fatty Liver Disease (NAFLD) with Dr. Ben Weitz.
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Podcast Highlights
0:53 Non-alcoholic Fatty Liver Disease is the leading cause of liver disease in the US, even though many people have not heard of this condition. 75% of patients who are overweight have this condition, which consists of an accumulation of fat in the liver. Nonalcoholic fatty liver disease, NAFLD, is an asymptomatic condition, but it can progress to non-alcoholic steatohepatitis which can lead to fibrosis, cirrhosis, liver cancer and liver transplantation. Dr. Rountree described it as a tsunami that no one’s paying attention to. Technically, the definition is when 5% of your liver tissue is replaced with fat. What is usually seen first is that one of the liver enzymes (AST, ALT, or GGT) is mildly elevated on a blood test.
8:25 It’s not just that the liver stores fat, but it produces new fat. We know how to create fatty liver, which is when we produce fois gras. We do this by force feeding the goose or duck grains, which is turned into fat by the liver. It’s eating sugar and carbs and esp. high fructose corn syrup, that turn on genes in the liver that cause fatty liver and not eating fat that causes this. Big Pharma is investing billions of dollars trying to develop drugs to reverse the progressive form of fatty liver, known as Non-Alcoholic Steatic Hepatitis (NASH). Technically speaking, fatty liver doesn’t hurt you, but a percentage of people with fatty liver will develop fibrosis because the inflammatory pathways have been turned on–an auto-inflammatory process. If you lay down enough scar tissue, eventually you end up with cirrhosis or possibly liver cancer. It is expected that within the next 5-10 years, NASH will be the number one cause for liver transplants.
13:20 Studies show that when you track patients with fatty liver, they have much a higher incidence of mortality from other diseases. [Here is a good review paper on this topic: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5397356/?fbclid=IwAR19ujpU2qfD7mFaV-bAM96oN_SNZRoHiXb1BU3AbRM7xE4BLUmPUl-RW0g] The number one marker for this is C-reactive protein (HsCRP) and you start to worry especially when it is above 3. We also know that gum disease, like the existence of a bacteria known as Porphyromonas gingivalis in the gums, increases this risk. Also dysbiosis of the gut increases inflammation and leads to fatty liver.
15:56 We diagnose fatty liver first by measuring liver enzymes on a blood test, esp. ALT, AST, and GGT. ALT and AST are called transaminases because they move amino acids around–they’re part of the digestion process. Dr. Rountree feels that GGT, (Gamma-glutamyl transpeptidase), is a more sensitive test, though it is often not tested. GGT is an enzyme involved with glutathione metabolism. But when you discover that these enzymes are elevated, you must first make sure that they don’t have a virus, that they haven’t taken too much Tylenol, or have some other toxic exposure. After ruling these out, if you are suspecting Fatty Liver, then you should order an ultrasound. A biopsy would be more definitive, but nobody wants to have this procedure done.
19:37 Elevated triglycerides indicate a condition we call Metabolic Syndrome, which Dr. Rountree believes is an intersection between several different biochemical pathways that have gone awry, and at the core is a person who’s over-producing triglycerides.