Mercola 5/21/2023
Story at-a-glance • A ketogenic diet can be very useful initially when transitioning people who are metabolically inflexible. However, continuing in ketosis long term can lead to problems, including stubborn weight gain or the inability to lose unwanted weight
• The reason for this has to do with cortisol. Your body needs glucose, and when deprived for too long, your body will release cortisol to stimulate the production of glucose by your liver. Cortisol also promotes inflammation and central obesity, so you don’t want chronically elevated cortisol levels
• Your metabolic rate is strongly affected by the type of sugar you consume. High fructose corn syrup promotes ill health while whole fruit, raw honey and pure organic cane sugar are readily metabolized without promoting weight gain
• When adding in more carbs, you also need to reduce your fat intake to avoid elevating your triglycerides
• Restricting dietary fat and/or blocking the oxidation of fat inside of the cell have strong therapeutic effects against cancer by forcing the cell out of its excessive fatty acid oxidation state
In this interview, Georgi Dinkov and I continue our discussion about diet, diving into some of the finer details that can make or break your health. Dinkov is a student of Ray Peat, who passed away around Thanksgiving 2022, leaving behind a legacy of iconoclastic wisdom on how to optimize biological health.
For example, a ketogenic diet can be very useful initially when transitioning people who are metabolically inflexible, which is about 95% of the population of the United States. So, in the short term, the vast majority of people can benefit from going keto. However, if you continue in ketosis long term, you're going to run into problems.
Elevated Cortisol Leads to Central ObesityAs just one example, while weight loss is a typical response when going on a ketogenic diet, months later, maintaining that weight loss often becomes a struggle again. Dinkov experienced this firsthand. Once he started following Ray Peat's recommendations, he lost the weight again and kept it off.
"My take is it's an endocrine problem," Dinkov says. "So if you're struggling with weight you cannot lose, I think it's a good idea to do a blood work [panel] for the steroids … Every single person that has been struggling with excessive weight that has emailed [me] their blood results, without exception, their cortisol is either high-normal or above the range, both the AM and the PM value.
Their thyroid is less than optimal, in fact, pretty bad for most people … They're at the upper limit of normal. A very large number of people are basically hypothyroid … I think we are eating foods that are lowering our metabolic rate. We're living an excessively stressful lifestyle.
-----
How High Fructose Corn Syrup Causes DiseaseOne factor that makes a big difference in your metabolic rate is the type of sugar you consume. Contrary to popular belief, there's a dramatic difference between high fructose corn syrup and cane sugar. They're really two different foods. If the high fructose corn syrup is properly processed to remove all starch, then it's very similar to cane sugar because it's about 55% fructose and 45% glucose.
However, studies have shown beverages sweetened with high fructose corn syrup contain a tremendous amount of starch, which isn't accounted for in the calories listed on the label.
Once the starch is factored in, the caloric content of many sodas can easily quadruple that on the label, so you're getting FAR more calories than you think.
Additionally, because the starch is made up of such tiny particles, they can enter your blood circulation unprocessed via your digestive system, potentially causing an allergic reaction.
-----
Can Cane Sugar Be Part of a Healthy Diet?Most people who embrace natural health believe sugar is a pernicious evil, but Peat's and Dinkov's position is that the negative effects are primarily caused by high fructose corns syrup, and that pure cane sugar can actually be a useful strategy to counteract some of the challenges that people can get into when on a strict low-carb diet. Dinkov explains:
"Cane sugar, if it's pure, has a very different overall systemic health effect than high fructose corn syrup … I think most of the sugar sold in the crystal form, especially organic ones, is pretty safe. Heavy metal contamination used to be a problem in sugar distillation but it looks like most of the western countries have sorted this out …
Now, some people that have an issue with sugar are saying, 'Well, it's just empty calories and whatnot.' Multiple studies demonstrated that honey, which is very similar in composition to plain white sugar, does not trigger the normal hyperglycemic response that most of the other simple carbohydrates do. In fact, it improves the hyperglycemia in Type 2 diabetic patients despite being pure sugar.
-----
The Glucose-Cortisol LinkIn my book "Fat for Fuel," I argued that healthy saturated fats generate fewer free radical species in the electron transport chain than sugar. However, I'm starting to revise my views on this, based on Peat's work.
The problem is that if your glucose level is low because you're on a low-carb diet, your body is going to compensate by self-generating glucose, and that stimulus to make glucose is part of the obesity puzzle, because one of the ways in which your body produces glucose is by secreting cortisol.
And, as explained by Dinkov, if your cortisol is chronically elevated, you end up with central obesity and chronic inflammation, which clearly isn't good. So, you've got to have a certain amount of glucose, and it's best to get it from your diet rather than forcing your liver to make it, as cortisol is then also being churned out. Dinkov explains:
-----
Will Sugar Feed Cancer?In recent years, ketogenic diets have also been hailed for their ability to prevent and treat cancer, but even this may turn out to be a misunderstanding in the end.
"I think some of the ideas around glucose feeding cancer stem from two basic misunderstandings," Dinkov says. "One is that cancer is an evil cell, genetically mutated, and that your only chance is to kill all of those cells because they're not going away by themselves.
First of all, that's not true. Spontaneous remissions of cancer are known, and they vary depending on the cancer. Prostate cancer has a pretty high rate of spontaneous remission … A paper that came about five years ago … from the MD Anderson cancer center in Texas … said it's always been the position of medicine that cancerous mutations [happen] and after that, the cell becomes metabolically deranged.
SummaryDinkov also cites research in which the beta oxidation inhibitor etomoxir, prescribed for heart disease, induced full remission in neuro glioblastoma, which is thought to be incurable. So, in summary, either restricting dietary fat or blocking the oxidation of fat inside the cell appears to have strong therapeutic effects against cancer by forcing the cell out of its excessive fatty acid oxidation state.
"And, once you do that, there's no metabolic damage preventing the cell from oxidizing glucose," Dinkov says. "It's all functional. If you flood the cell with fat then, basically, that's what the cell will oxidize, because it's overabundant relative to the glucose that is getting to the cell. If you stop that process, or at least greatly restrict it, the cell starts oxidizing glucose again."
More:
https://articles.mercola.com/sites/articles/archive/2023/05/21/surprising-reason-why-you-may-need-more-carbs.aspx
