Energy restriction is also important for autophagy. MCT oil contains no protein and is only fat. Typically, protein inhibits autophagy, however butter contains such a small amount it’s unlikely that it has an effect. So, with LCTs, the gut is stimulated and digestive processes occur.īutter is mostly fat with a small portion of protein. MCTs are absorbed directly through the portal vein and taken immediately to the liver, whereas LCTs stimulate pancreatic enzymes and require bile to be released into the gastrointestinal tract. In addition to that, MCT oil has been successfully used to induce ketosis in the management of epilepsy, showing that the consumption of MCT oil can still produce a ketogenic environment.īutter and coconut oil are both fats, but MCTs are produced from coconut oil, it is 100% MCT composition and butter is mostly long chain triglycerides (LCTs), they have a different effect on our gastrointestinal system. Plus, MCTs are easily converted into ketones by the body and used as energy. MCT oil, even though calorically dense, has been demonstrated to improve insulin-mediated glucose metabolism and change fasting serum insulin levels. While black coffee is likely fine to drink in most cases during a fast, bulletproof coffees typically have added butter and medium chain triglyceride (MCT) oil. Fasting for longevity: likely does not break a fast.Fasting for gut rest: does break a fast.Fasting for metabolic health/weight loss: likely does not break a fast.However, keep in mind this benefit was seen in animals and has not yet been studied in humans. The authors of this study related the increase in mTOR inhibition and other cellular processes to the polyphenols contained in coffee. In addition to the metabolic benefits from coffee, one study showed that the consumption of both caffeinated and decaffeinated coffee trigger autophagy in mice. Coffee intake may also elicit a reflux sensation, which isn’t ideal for those with heartburn issues. Coffee stimulates gastrin (a hormone that stimulates the secretion of gastric acid), gastric acid secretion, and gallbladder contraction, all of which have an impact on our gastrointestinal tract. However, when looking at the long-term consumption of coffee, regular consumption has been linked with various positive health benefits including reducing the risk of type 2 diabetes.Įven though black coffee contains minimal to no calories, it does promote functions of digestion. During nutrient deprivation, the cells become slightly more insulin resistant likely due to the body prioritizing fuel to go to the brain instead of other cells in the body. ![]() However, similar to the effects of fasting regimens, reduction in insulin sensitivity was observed in a short-term time frame so further studies are required for longer-term impact assessment. In one literature review, coffee was shown to decrease insulin sensitivity. ![]() With those guidelines in place, fasting was still shown to be associated with benefits around health and prevention of disease. ![]() There have been several studies on intermittent fasting where black coffee was allowed within the fasting window and some studies which allowed consumption of any food or beverage within the fasting window, as long as it was less than 25% of energy needs. CoffeeĬoffee has minimal calories, but what if we don’t drink it black? We’ll take a look at a few popular coffee picks: Black Coffee Let’s look at a few items through that lens. The three most common reasons people fast are for weight loss/metabolic health, gut rest, or longevity. When considering whether a food, beverage, or supplement might break a fast, it’s important to first consider what your goals are around fasting.
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