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April 02, 2012


Researchers around the World have Linked Gut Problems to Brain Disorders.


Brain disorders can take many forms, one of which is autism. In this particular area you can again find compelling evidence of the link between brain and gut health. For example, gluten intolerance is frequently a feature of autism, and many autistic children will improve when following a strict gluten-free diet. Many autistic children also tend to improve when given probiotics, either in the form of fermented foods or probiotic supplements.


gluten intolerance グルテン不耐症
gluten-free diet グルテン除去食
probiotics プロバイオティクス

Dr. Andrew Wakefield is just one of many who have investigated the connection between developmental disorders and bowel disease. He has published about 130-140 peer-reviewed papers looking at the mechanism and cause of inflammatory bowel disease, and has extensively investigated the brain-bowel connection in the context of children with developmental disorders such as autism.

Dr. Andrew Wakefield博士は、まさに発達障害と腸疾患との関係を調査した大多数研究者の1人です。彼は、炎症性腸疾患のメカニズムおよび原因を調べる約130-140の査読された文献を公表し、自閉症などの発達障害の子どもに関連して脳腸関係を調査しました。

developmental disorders 発達障害
bowel disease 大腸疾患

A large number of replication studies have also been performed around the world, by other researchers, confirming the curious link between brain disorders such as autism and gastrointestinal dysfunction. For a list of more than 25 of those studies, please see this previous article.

replication study:繰り返し実験、追試(結果の再現性を確認する実験)
gastrointestinal dysfunction 胃腸障害

Other Health Benefits of Probiotics


Your body contains about 100 trillion bacteria -- more than 10 TIMES the number of cells you have in your entire body. Ideally, the ratio between the bacteria in your gut is 85 percent "good" and 15 percent "bad."

In addition to the psychological implications discussed above, a healthy ratio of good to bad gut bacteria is essential for:


*Protection against over-growth of other microorganisms that could cause disease


*Digestion of food and absorption of nutrients


*Digesting and absorbing certain carbohydrates


*Producing vitamins, absorbing minerals and eliminating toxins


*Preventing allergies


Signs of having an excess of unhealthy bacteria in your gut include gas and bloating, fatigue, sugar cravings, nausea, headaches, constipation or diarrhea.


sugar cravings 糖質渇望

What Interferes With Healthy Gut Bacteria?


Your gut bacteria do not live in a bubble; rather, they are an active and integrated part of your body, and as such are vulnerable to your lifestyle. If you eat a lot of processed foods, for instance, your gut bacteria are going to be compromised because processed foods in general will destroy healthy microflora and feed bad bacteria and yeast.


Your gut bacteria are also very sensitive to:




*Chlorinated water


*Antibacterial soap


*Agricultural chemicals




Because of these latter items, to which virtually all of us are exposed at least occasionally, it's generally a good idea to "reseed" the good bacteria in your gut by taking a high-quality probiotic supplement or eating fermented foods.


Tips for Optimizing Your Gut Bacteria


Getting back to the issue of inflammation for a moment, it's important to realize that an estimated 80 percent of your immune system is actually located in your gut, which is why you need to regularly reseed your gut with good bacteria.


Additionally, when you consider that your gut is your second brain AND the seat of your immune system, it becomes easy to see how your gut health can impact your brain function, psyche, and behavior, as they are interconnected and interdependent in a number of different ways—several of which are discussed above.


In light of this, here are my recommendations for optimizing your gut bacteria.


*Fermented foods are still the best route to optimal digestive health, as long as you eat the traditionally made, unpasteurized versions. Healthy choices include lassi (an Indian yoghurt drink, traditionally enjoyed before dinner), fermented milk such as kefir, various pickled fermentations of cabbage, turnips, eggplant, cucumbers, onions, squash and carrots, and natto (fermented soy).



*If you regularly eat fermented foods such as these that, again, have not been pasteurized (pasteurization kills the naturally occurring probiotics), your healthy gut bacteria will thrive.


*Probiotic supplement. Although I'm not a major proponent of taking many supplements (as I believe the majority of your nutrients need to come from food), probiotics are definitely an exception. I have used many different brands over the past 15 years and there are many good ones out there. I also spent a long time researching and developing my own, called Complete Probiotics, in which I incorporated everything I have learned about this important tool over the years.


*If you do not eat fermented foods, taking a high quality probiotic supplement is definitely recommended.


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