Category: Resistant Starch
The health world is fixated on fiber, constantly telling us how important fiber is and how we should all be eating more of it. Back in the day, our cultural obsession with fiber was all about being “regular.” You had to load up on fiber to keep things moving, so to speak. Nothing was more important. So we started our days with bland, tooth-cracking breakfast cereal that tasted like tree bark and sparked no joy. But hey, it was loaded with fiber and therefore good for us, right?
I’ve long been skeptical of that particular story, mostly because every major health agency that recommends higher fiber intake also says that we should get much of that fiber from whole grains. And you know how I feel about that. If whole grains aren’t essential (or even healthy, if you ask me), then how could the fiber they provide be essential? It doesn’t add up.
Now, though, as we learn ever more about the emerging science of the microbiome, the fiber story is starting to shift. It’s become less about pushing “roughage” through our colons to create bulkier, more impressive bowel movements (although some people still promote this supposed benefit). Certain types of fiber, it turns out, are essentially food for the microbes living in our guts.
Well, does it?
We’re all going to be putting food in our bodies just about every day for the rest of our lives. Most of us will do it several times a day. We’ll chew it, send it down the esophagus into our stomach, and expose it to gastric juices and digestive enzymes. We’ll strip it of nutrients and send the excess down to the colon for dismissal, feeding resident gut bacteria along the way. The whole process should go smoothly. There shouldn’t be any pain or discomfort, bloating or constipation. Oh sure, nobody’s perfect, and there will be slow-downs or speed-ups from time to time, but in general a vital, fundamental process like digestion shouldn’t even register in our waking, conscious lives.
But sometimes it does.
Gut health is an enormous topic that just got even bigger.
You know about probiotics: bacteria that provide benefits to our gut, metabolic, and/or overall health when eaten. Some probiotic bacteria colonize our guts—they take up residence in our digestive tract and provide lasting effects. Some probiotic bacteria are transients—they visit and impart benefits and interact with our guts and its inhabitants, but do not stay.
You also know about prebiotics: non-digestible food components that nourish and provide food for the bacteria living in our guts. Prebiotics include fermentable plant fibers, resistant starch, “animal fiber,” and certain polyphenols.
This is standard stuff. Entire store shelves are devoted to fermented dairy, pickles, sauerkraut, supplements, kombucha, and other sources of probiotics. You’ve probably got all sorts of strange gums and fibers and powders that serve as prebiotic substrate for gut bugs. Gut health is mainstream.
But you probably don’t know about postbiotics.
I’m trying to stay strictly primal/paleo, but I always run into problems when I need to thicken sauces or soups. I grew up learning to use flour/cornstarch like everyone else, but is there a good low-carb/primal alternative?
I received this email a while ago, but it wasn’t the first. A number of readers have expressed their confusion when it comes to thickening sauces, gravies, or soups without using traditional floury methods. The question of thickening sauces is one of the hurdles I face every time I put up a recipe post – it’s become a bit of an internal struggle (as seen with last week’s beef and broccoli stir fry recipe, in which I hesitatingly called for a teaspoon of flour as a thickener) because while adding a bit of flour or cornstarch to a larger recipe may not drastically impact the carb count, it does complicate the consistently Primal message I try to convey. This post, I hope, will resolve that struggle.
For today’s edition of Dear Mark, I’m answering a reader question about beans. But it’s not just about beans. It’s about something called the Bean Protocol, a rather new dietary approach that many of my readers have expressed interest in. The Bean Protocol is supposed to improve the liver’s ability to clear out toxins, thereby preventing them from recirculating throughout the body in perpetuity. Today, I’m going to discuss where it fits in a Primal eating plan. Let’s go: Hi Mark, Have you heard about this “Bean Protocol”? From what I can tell people are eating tons of beans and getting great results. It’s supposed to remove toxins from the liver or something else that only beans can do. What do you think? Thanks, Matt I did some digging around. I read the Bean Protocol coverage over at PaleOMG, where Juli has been following the bean protocol for several months now and seeing great results. There’s a Bean Protocol E-course that I did not sign up for, but I think I have a decent handle on the topic. How to Do the Bean Protocol Here’s the gist: No caffeine No sugar No dairy No gluten No processed food No factory-farmed meats; no fatty meats Eat 3 half-cup servings of beans or lentils a day (varies by person) Fill the rest of the food with lean meat, leafy green vegetables, alliums (onion, garlic, leek, etc), and cruciferous vegetables (broccoli, cabbage, cauliflower). What’s Supposed to Happen on the Bean Protocol The soluble and insoluble fiber in the beans binds to toxins which the body can then flush out more easily. Without the fiber from the beans, your body can’t process and excrete the toxins, so they simply recirculate, stay in the body, and sometimes express themselves in the form of acne and other diseases. Adherents credit the bean protocol for fixing longstanding issues like acne, Crohn’s, and many other conditions. Bored with beans? We have 41 ways to make them more fun. Is this true? Is there any evidence of this in the scientific literature? Well, there isn’t much direct evidence for beans improving liver clearance of toxins, but there is circumstantial evidence. For one, prebiotic fiber is good for liver health. There are plenty of studies to support this. Synbiotics (a combination of probiotics and prebiotics) and BCAAs taken together improve hepatic encephalopathy, a feature of liver failure where the liver fails to detoxify excess ammonia. However, it does not do so directly. The fiber isn’t necessarily “binding” to the lead and excreting it. Instead, it does so by increasing levels of lead-binding gut bacteria which in turn bind and excrete it, shoring up the gut lining so that lead can’t make it into circulation, increasing bile acid flow, and increasing the utilization of healthy essential metals (like zinc and iron). The bacteria are essential for the effect; pre-treatment with antibiotics abolishes the benefits. So we can’t say for sure that the fiber itself is “binding” to the toxins. Allium, Inulin … Continue reading “Dear Mark: What’s With The Bean Protocol?”
When the ancient Greek father of medicine, Hippocrates, said “All disease begins in the gut,” he was probably right. Poor gut health has been linked to a broad range of diseases and health conditions, from depression to diabetes, cancer to obesity, and autism to autoimmune disease. Researchers are exploring connection between prevotella, a species of gut bacteria, and severity of COVID-19. Search the medical literature and you’ll probably find links between the gut and any illness you can imagine.
So—all the world’s health issues solved, right? Not exactly.
Gut health is one of those topics that gets more complicated the deeper you go. The more you read about gut bacteria, the less you realize you know and the less you realize anyone knows, even the researchers. It’s infinite onions, all the way down. The layers never stop, and exposing them eventually makes you want to cry. (Speaking of which, onions are actually a very good food for gut health).