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Low FODMAP vs. Gluten-Free Diet
Gluten-Free or Rational Thought-Free?
I blame that tennis player for most of today’s gluten tomfoolery. Yeah, Novak Djokovic. Here’s the ridiculous way it went down:In 2010, Djokovic met with Dr. Igor Cetojevic, a Bosnian Serb who theorized that Djokovic’s up-til-then frequent breakdowns on the court were due to a wheat allergy. To prove it, he had Djokovic put one hand on his stomach while holding the other straight out with his palm up. When the doctor pushed down on his outreached hand and told him to fight against the pressure, Djokovic easily resisted.
Cetojevic then told the tennis player to do the same thing while – get this – holding a piece of bread against his stomach. This time, the doctor was able to push down the opposite arm as easily as if it were a willow branch. The doctor then explained that the experiment that turned Djokovic into an open-faced sandwich “showed that his body was resisting the wheat,” or, more specifically, resisting the gluten inherent to wheat products.
For real. Good thing the doc didn’t suspect an allergy to blueberry pie because that would have left a nasty stain on Djokovic’s shirt.
Djokovic, convinced by this modern-day medical Svengali, subsequently gave up eating wheat. Unparalleled success ensued. Djokovic went on to win 21 Grand Slam titles, in addition to winning or doing every other thing possible in the tennis-balling world.
Athletes all over the world adopted a gluten-free diet simply because they thought it would make them perform better too. Regular, non-athlete types also picked up on the gluten phobia. They lit their torches, picked up their pitchforks, and stormed the bread castle – not to make toast for their club sandwiches – but to banish it entirely.
Still others abandoned wheat because of the “Wheat Belly” book that was published one year after Djokovic publicly condemned wheat. The book put a fresh spin on the debate, though. It claimed that modern wheat was full of gliadin, a supposedly addictive protein that turns normal humans into bread-seeking zombies who will stop at nothing to gnosh another bagel.
As a result of all that crap, roughly one out of every four Americans has adopted a gluten-free, bread free, or at least a gluten or bread-reduced diet, and truth be told, this practice has made many of them perform better and feel better.
Part of it might be because of the “nocebo” effect, which is when an inert substance causes perceived harm. Eliminating the nocebo, in this case bread, would result in feeling better and performing better.
More likely, though, there is something in bread that’s causing problems, but in the vast majority of cases, it’s not gluten – they’re blaming the wrong guy. I know that because only about 5% of the population has celiac disease (the people who really are allergic to gluten), while another 5 or 10% might have “non-celiac gluten sensitivity” (NCGS).
Oh, and that stuff about gliadin, that zombie protein? Those supposedly addictive gliadins are present in all grain lines, and some seeds of ancient grains contained even more gliadin than modern lines. Besides, the human gut doesn’t appear to even absorb the opioid protein fraction of gliadin.
So, let’s forget about the “Wheat Belly” faction of bread phobics and concentrate on what it is about bread that’s allegedly causing so many people to have digestive problems.
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Any Research to Back Up the Fear of Gluten?
About a year after the ridiculous piece-of-bread-on-Djokovic’s-tummy fiasco, Peter Gibson, a professor of gastroenterology, published a double-blinded, randomized, and placebo-controlled experiment that found gluten to be the cause of gastrointestinal distress in people without celiac disease.It gave plenty of doughy ammo to the anti-gluten people, but rather than kick back, put his feet on his desk, and gnaw on a tasteless, gluten-free garbanzo-bean biscuit, that same Dr. Gibson got a funny feeling in his stomach that was entirely unrelated to gluten.
Gibson couldn’t figure out what it was about gluten that could be causing problems in people. Also, there were so many variables in his initial experiment that he worried that there might be something he wasn’t controlling or taking into consideration. So he decided to repeat the experiment, this time taking extra precautions that are rarely seen in any nutritional research.
He found 37 subjects, none of which had celiac disease but all whose gastrointestinal problems had improved on a gluten-free diet. He then provided all their meals, so there was no chance of subjects making midnight runs to Al’s Donut Emporium or Taco Cabana.
He eliminated any potential dietary trigger for gastrointestinal problems, including certain preservatives, lactose, and poorly absorbed short-chain carbohydrates known as FODMAPS (Fermentable Oligosaccharides, Disaccharides, Monosaccharides, and Polyols) that are found in a ton of foods, including many bread products.
And, in an effort to leave no stone unturned, he collected everyone’s urine and fecal matter for analysis. He also had them all cycle through different diets. They were first put on a low-FODMAPS for two weeks to establish a baseline. In the following days, they were given either a diet high in gluten, one with 2 grams of gluten and 14 grams of whey protein isolate (the low-gluten diet), or one with 16 grams of whey protein isolate (the placebo diet).
No one ever knew what diet he or she was on. When he looked at the results, he found that all the diets worsened gastrointestinal symptoms to a similar degree! He concluded that it was psychological, and since participants expected to feel worse, they did.
Gibson was forced to conclude, “In contrast to our first study, we could find absolutely no specific response to gluten.” But before you anti-gluten people get too smug, Gibson and his co-researcher, Jessica Biesierkierski, did find a culprit. Their study showed that it was far more likely that it was the FODMAPS that were causing the gastrointestinal problem previously attributed to gluten.
Remember that I wrote that the subjects were first put on a low-FODMAP diet to establish a baseline? Well, according to Biesierkierski, “Reduction of FODMAPS in their diets uniformly reduced gastrointestinal symptoms and fatigue in the run-in period, after which they were minimally symptomatic.”
And get this, when you stop eating bread products, as is the most universal attribute of the low-gluten diet, you automatically remove some of the largest dietary sources of FODMAPs. That could well explain why so many people claim to feel better when they go on bread-free diets.
FODMAPS are poorly absorbed by pretty much all of us human types, and any that aren’t absorbed by the small intestine pass onto the large intestine where they’re fermented by bacteria.
The resultant gas formation causes some people, probably those with an overpopulation of certain bacteria and an underpopulation of others, to experience symptoms similar to irritable bowel syndrome, which could easily be misconstrued as gluten sensitivity.
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Is That All You Got, One Measly Study?
A more recent study (Skodje, et al. 2018) had the same goal, to find out if it was really gluten that was giving people gastrointestinal woes. They rounded up 59 people with known gluten sensitivity and gave them each one type of muesli bar to eat for a week:- One with 5.7 grams of gluten
- One without gluten but with 2.1 grams of fructans (a type of FODMAP)
- One that was a placebo (contained neither gluten nor fructans)
Hold on tight to the sides of your toilet seat because the gluten group came in last at causing problems. In fact, they found “no significant effect” from gluten. The fructans bar caused the most problems.
Don’t We Already Know This Stuff?
I’ll readily admit that some of this isn’t ground-breaking information, as it’s well-known among the scientific community that self-reported gluten sensitivity is largely bogus. However, the information hasn’t yet permeated down to the great unwashed and too many people still peg gluten as the enemy.If you doubt that the public is still ignorant of the realities of gluten, tally up in your mind how many people you know who claim to be gluten sensitive. It’s probably a number that belies the estimate that only 5 to 15% of the population has celiac disease or gluten sensitivity.
So, What Foods Contain FODMAPs?
As implied above, fructans are present in wheat, spelt, rye, and barley, the main components of many breads, so when people with digestive problems eliminate bread from their diet, they’re automatically getting rid of one source of their difficulties.Fructans are only one member of the FODMAP group, though. The acronym stands for "fermentable oligosaccharides, disaccharides, monosaccharides, and polyols. All four are small-chain carbohydrates that occur naturally and that are easily fermented by intestinal bacteria, leading to irritable bowel syndrome (IBS) and gastrointestinal upset in general.
The damnable thing is that they’re in a lot of foods. It’d be great if people susceptible to FODMAP problems could eliminate all their problems by just avoiding bread, but unfortunately, it’s not the case. Here are some of the foods highest in FODMAPS that susceptible people might want to limit or avoid:
Vegetables and Legumes
- Garlic
- Onions
- Asparagus
- Beans, e.g., black, kidney, lima, soya
- Peas
- Mushrooms
- Cabbage (savoy)
- Cauliflower
Fruit
- Apples
- Apricot
- Avocado
- Bananas (ripe)
- Blackberries
- Grapefruit
- Mango
- Peaches
- Pears
- Plums
- Raisins
- Sultanas
- Watermelon
Meat Products
- Sausages (some)
- Processed meat (some)
Breads, Cereals, Grains, and Pastas
- Barley
- Bran
- Cous cous
- Granola
- Muesli
- Muffins
- Rye
- Seminola
- Spelt
- Wheat foods
Nuts and Seeds
- Cashews
- Pistachio
Milks
- Cow’s milk
- Goat’s milk
- Sheep’s milk
- Soy milk
Dairy and Eggs
- Buttermilk
- Cream
- Custard
- Greek yogurt
- Ice cream
- Sour cream
- Yogurt
Cheeses
- Cream cheese (over 2 tbsp)
- Ricotta
Condiments
- Hummus dip
- Jam (mixed berries)
- Pasta sauce (cream based)
- Relish
Sweeteners
- Agave
- High Fructose Corn Syrup (HFCS)
- Honey
- Inulin
- Isomalt
- Maltitol
- Sorbitol
- Xylitol
Drinks
- Apple juice
- Pear juice
- Mango juice
- Sodas with HFCS
- Herbal tea (strong)
- Beer (even though it’s made from barley, wheat, or rye, it still qualifies as a low-FODMAP food)
- Eggs and meats.
- Cheeses like cheddar, cottage cheese, Swiss, Mozzarella, feta, brie, and Camembert.
- Almond, rice, coconut, or oat milk.
- Grains like quinoa, oats, popcorn, and rice.
- Seeds like almonds, peanuts, walnuts, sunflower seeds, and pecans.
- Vegetables like potatoes, corn, pumpkin, red peppers, carrots, eggplants, tomatoes, cucumbers, and zucchini.
- Fruits like grapes, oranges, cranberries, raspberries (no more than about 30), strawberries, blueberries, and pineapple.
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How to Use This Info
Here’s what I recommend doing:- Look at the evidence and at least be open to the idea that some cases of alleged gluten insensitivity are psychological and the result of the “nocebo” effect. It’s not hard to imagine, especially with so many yahoos claiming that eliminating gluten was the athletic game-changer they’d been waiting for.
- If being gluten-free has allowed you to lose weight, consider that most people start to lose weight whenever they start following any diet where they’re forced to pay attention to what they’re eating. Not only that, but gluten-free diets are restrictive, so you’re bound to lose weight.
- If you suffer legitimate gastrointestinal problems that seem to disappear after going gluten-free, consider that it might be related to FODMAPs and not gluten. After all, low or no-gluten diets are also low in FODMAPs.
- If you suspect that FODMAPs might be a problem for you, information on low-FODMAP diets is widely available. Start by monitoring how you feel after you eat any high-FODMAP, low-gluten foods. If those foods cause gastrointestinal rumbling or worse, it’s a good chance you’re sensitive to FODMAPs. People with FODMAPs sensitivities might also want to start taking probiotics and eating probiotic foods 133 to see if they have any benefit.
- If you don’t have celiac disease or NCGS, accept that going on a no or low-gluten diet isn’t going to do squat for your athletic ability.
- If, however, you belong to the small percentage of people who have celiac disease or have NGCS, stay the course and continue to avoid all things gluten.
