Is Your Food Digesting or Rotting in Your Gut?

Is Your Food Digesting or Rotting in Your Gut?

Eating in a manner whereby food does not digest completely will ruin our health. Eating in a manner which enables perfect digestion is the pathway to flourishing health!

by David Klein, Ph.D., H.D., Director, Colitis & Crohn’s Health Recovery Center

Humans are provided with the senses and faculties to select and completely digest our most nutritious and biologically suitable foods. However, in our modern society we have departed from instinctual, simple whole foods and digestive maladies run rampant. Happily, with the help of some guidelines, we can correct our harmful eating habits and establish excellent digestive health.

The Joys of Healthful Eating

When we eat in a manner whereby everything digests completely, we derive outstanding results! When our natural foods digest completely, we can experience these major benefits and more:

• a clean internal bodily environment,
• a silent, unnoticeable digestive system,
• a clear mind and stable metabolism, unfettered by chemical imbalances caused by toxemia (a toxic blood stream),
• pleasant or no body odors,
• pleasant or no body waste odors,
• effortless, pleasant, regular bodily waste evacuation,
• freedom from most illnesses and strong resistance to environmental pathogens,
• the promotion of excellent, dynamic health, physical beauty and longevity.

The Miseries of Unhealthful Eating

When we eat unwisely, whether in our choice of food or in our manner of eating (we do have digestive limitations!), nutrients decompose in our gut via the action of bacteria. Under this scenario, fermentive and putrefactive bacteria decompose the food matter, weakening the intestinal tract, impairing nutrient absorption, defiling our entire body with pathological substances, impairing our mental functions and causing fatigue. This condition is known as “toxicosis” (general bodily toxicity or “auto-intoxication”) or, less formally, as “food drunkenness”; it impairs our health and eventually imperils our life. Indigestion (flatulence, belching, bloating) and foul bowel and body odors are just some of the unpleasant warnings signaling the beginning of illness.

Undigested protein (chiefly from meat, dairy products, beans, nuts and seeds) will readily putrefy (rot) in our warm gut, just as milk spoils at room temperature on a warm day. Putrefactive byproducts are highly toxic and carcinogenic. They include: methane, hydrogen sulfide and mercaptans (which yield the rotten egg odor when carried out by the methane gas), cadaverine, putrescine, ammonias, indoles, skatoles, leukomaines and host of other toxic and carcinogenic gases and substances. Just as hydrogen sulfide gas will decompose concrete, iron and steel sewer pipes, it will irritate and destroy the flesh inside our intestines and colon.

Under haphazard eating conditions, simple carbohydrates (from fruit) and complex carbohydrates (starches from grain products and white potatoes) are readily fermented by fungi and bacteria in the gut. The result is the production of alcohol and vinegar which is dozens of times more toxic than alcohol. These ravage bowel tissue and can cause painful ulcerations.

Furthermore, the overeating of slow-digesting fatty high-protein foods causes the stomach to secrete and retain copious amounts of acid. When this hyper-acidic condition occurs chronically, the stomach and intestines can become inflamed and ulcerated and the pylorus sphincter, which normally allows food to enter the duodenum, can become swollen shut. This typically leads to fermentation and putrefaction of the stomach’s contents, GERD (gastroesophogeal reflux disease), vomiting and great pain. Chronic inflammation and ulceration lead to cancer.

It is imperative to avoid operating our gut as a composting bin filled with odoriferous, rotting, acidic wastes at all costs! The toxicosis that results from indiscriminate, haphazard eating accelerates aging, causes disease, including gastritis, irritable bowel, colitis, Crohn’s disease and ulcers, and is the cause of most deaths! We don’t really want to endure chronic, incomplete digestion and toxic bowels. Sadly, most live this way and accept it as “normal.” Happily, there is a way to create perfect bowel health.

The Formula for Perfect Digestion and Superb Health

Via the science and fine art of selecting our natural biological foods and eating them correctly—i.e., only when we are truly hungry, alert and relaxed, in proper sequence and combinations, in quantities which do not exceed our digestive limitations or point of satiation, in their fresh, ripe, raw state and chewed to the point of liquefaction—we can enjoy complete, perfect digestion and all the wonderful benefits of a well-nourished and clean body!

Here are basic, time-tested, scientifically proven healthful eating guidelines for promoting optimum digestion and gut health.

Food Selection:

Choose raw, fresh, ripe, organic, whole, vegan foods. Base your diet in fruits and vegetables and eat only those foods which are attractive to your senses, especially your sense of taste. Obtain enough calories from fruit to maintain sustained peak energy and internal cleanliness. Avoid animal-derived foods—they are poorly digested and toxic when cooked. If you choose grains and legumes/beans (neither are recommended, since they also digest poorly), select them in their whole state and either sprout or cook them lightly. If you choose to cook vegetables, light steaming is the least deleterious method; however, they won’t digest perfectly, either. Fashion a diet with close to 80% of the calories from carbohydrate, 10% from protein and 10% from fat. Deriving more than 10% of your calories from fat and/or 10% from protein will invariably exceed your digestive limitations, resulting in toxicosis and disease.

Food Combining:

Follow food combining guidelines to a “t.” Eat fruit only on an empty stomach, alone or with leafy greens, celery and/or cucumber. Eat melons alone. Eat citrus fruits at least one-half hour before non-acidic sweet fruits. Starchy foods (squash, potatoes, grains and old carrots) combine well with all vegetables and bell peppers; they do not combine well with tomatoes or other acidic or sweet fruits, nuts, seeds and avocados. Fatty, high-protein foods (nuts, seeds and avocados) combine well only with non-starchy vegetables (greens and celery), cucumbers and minimal amounts of acidic fruits including tomatoes; they do not combine well with starchy or non-acidic sweet foods.

Meal Sequencing:

The best sequencing is fruit-and-greens meals during the day, then, optionally, a glass of raw vegetable juice followed at least one-half hour later by a dinner of vegetables with one fatty food, i.e., avocado, nuts or seeds. Note: it is not necessary and, in many cases, unhealthful to eat a fatty food every day. Furthermore, it is OK to have a dinner of simply more fruit and greens.

Meal Spacing:

It is most beneficial to space meals as long as is comfortably possible. Assuming you are not so fatigued that you need to take a nap to restore your energy, a slightly uncomfortable feeling in the back of the throat and a dip in your physical and/or mental energies are the signs that it is time to eat again. Sweet, juicy foods, eaten in sufficient quantity, will quell hunger, rehydrate you and supply your caloric fuel needs. To put it simply, eat sufficient quantities of nutritious, simple carbohydrate-rich, whole foods—primarily fruit—to keep your blood sugar and hydration at a level which assures sustained physical and mental performance.

Daytime Diet:

Eat one or two types of juicy, sweet fruits for breakfast, or have a glass of fresh juice made of fruit and celery and/or greens, or a smoothie made of the same. Follow that with different types of fruits for each of the following one to three meals, eaten with or without greens, celery and/or cucumber, taking them in sufficient quantity for satiation and sustained energy.

Dinner Diet:

If desired, drink raw vegetable juice, then at least one-half hour later follow it with a simple salad of vegetables and fruit-vegetables such as tomato and bell pepper. If you include carrot in your vegetable juice, avoid having tomato with your dinner. If you desire a fatty food, have one to two ounces of nuts or seeds blended with vegetables, tomato or orange juice as a dressing, or two to four ounces of avocado. Caution: it is generally imperative to avoid fatty foods, raw vegetable salads and acid fruits if you are fatigued and experiencing inflammation and illness. If you prefer a meal of more fruit for dinner, that is generally a healthful choice—follow and trust your senses when they call for raw, delicious foods!

You Can Do It!

These guidelines may seem tedious in the beginning, but within a week or two they become easy and “first nature.” Listening deeply to the body’s signals and eating simple, whole-food meals are the keys. As we experience digestive ease and the great revitalizing benefits, this way of eating becomes simple and most pleasurable. So, dig in! Digestive maladies will soon become a thing of the past. You’ll love eating, your tummy will love you and glorious health will blossom forth!

For further insight, study Self Healing Colitis & Crohn’s and Digestion Perfection. These books are available from the Colitis & Crohn’s Health Recovery Center Bookstore at Also see and and If you are seeking health guidance, I offer international counseling by phone and Skype. Please feel free to contact me at dave AT, or dave AT, or 808-572-0861 (Hawaii). I will be glad to help you.

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  1. Carrots that we see in stores that were not freshly picked and do not have the greens on top — they are somewhat starchy; the sugar content turns to starch as they sit around and age. -Dr. Dave

    • Mary
    • January 26th, 2012

    Wow, this diet contains nothing that I am able to eat or digest. Since I am allergic to citrus and cannot digest vegetables, I stick to a meat, bread and potato diet. I should also mention that I am in my 30’s, below the ‘average’ weight, and have never had any health issues. Your crazy diet may work for some people, but not for everyone. Besides, everyone knows that vegans have terrible gas!

    • Mary, clean out / detoxify on the Vegan Healing Diet Plan an then you WILL be able to eat those foods and have NO gas and establish superb health. Order Self Healing Colitis & Crohn’s and set yourself free.

  2. Say, you got a nice blog article.Thanks Again. Really Cool.

    • Sharon
    • April 2nd, 2012

    M husband who is 65yrs has the worst digestive system ever. For years he belched almost 24/7. A couple of months ago he heard about Wheat Belly and what it causes so he gave up anything that contained flour and his stomach shrunk and so did his belching.. He now consumes a lot of meat eggs and dairy products and I feel it is playing havoc with his digestive system cause he now suffers from rotten egg odor coming from both ends.I think the meat eggs and dairy is doing him in. He does love vegetables and fruit. I am wondering if he should just quit eating meat, eggs and dairy

    • Rachel
    • July 11th, 2012

    Hi- I eat well as you describe – raw, vegan and I still am not digesting my food????taking enzymes and probiotics! What jump starts Digestion? I was actually considering some organic red meat therapy for the first time!!
    Asian herbs? Too damp??? Thx

    • Hi Rachel,

      The Vegan Healing Diet provided in my Self Healing Colitis & Crohn’s book is what you need to study and embrace precisely. Digestion depends on several factors. Rest and the Vegan Healing Diet is what will get you healing. Meat is indigestible and will make you sicker. Self Healing Colitis & Crohn’s and Digestion Perfection books will teach you everything u need to know for perfect digestion and lasting healing, and I can coach you if you need. See


      Dr. David Klein

    • john
    • October 6th, 2012

    You’d think someone with medical knowledge and good intentions wouldn’t be trying to sell something… please back up your claims of certain foods like meat as toxic, as people’s livelihoods depend on it.

    • John, my book Self Healing Colitis & Crohn’s backs up my claim plentifully, as does evidence throughout the ages — you can read it. As do the medical reports of 2,000+ clients of mine over 20 years. The toxic content of meat-eater’s feces is the proof you yourself can see and smell. Colon cancer and meat eating go hand-in-hand. No one’s livelihood has to depend upon farming, killing and processing meat carcasses. Cows would rather not be killed. Meat is not completely digestible–it putrefies and poisons the body. Read Self Healing Colitis & Crohn’s and try the Vegan Healing Diet and you will enter a whole new mind-body consciousness-raising reality and overcome inflammatory bowel disease. 99% of my clients were meat eaters and all of them have healed IBD by going vegan. Read the testimonials at my site. It appears that you are a student at Syracuse University. By criticizing me, an educator, for selling a book which teaches people how to save their lives and become well, are you also condemning books which students have to buy because the authors are selling something (education)? Are you condemning educators/teachers? Does Syracuse U give you a free education? What is the matter with selling Self Healing Colitis & Crohn’s for $23.95 when it has saved countless lives? It teaches how to heal and stay well and is endorsed by 4 medical doctors. BTW, Congressman Dennis Kucinich overcame Crohn’s disease by adopting a vegan diet. I interviewed him a few years back for an article in my Living Nutrition magazine.

      Best healthful wishes,

      David Klein, Ph.D., Hygienic Doctor
      Director, Colitis & Crohn’s Health Recovery Center

    • rlam1429
    • December 17th, 2012

    I cannot eat fresh fruits and veggies. I have oral allergies. Any suggestions????

    • You can and you must eat fruits and veggies. Your body was designed to eat them. Your current diet has made you toxic and possibly sick. Do not believe you have oral allergies. You have symptoms of toxemia. Follow the Vegan Healing Diet in my Self Healing Colitis & Crohn’s book — order at — and let me guide you to health. You will detox, overcome your symptoms and enjoy eating like never before.


      Dr. Dave
      (808) 572-0861 (Hawaii)
      Skype: davadurian

      Follow my daily availability schedule at

        • Laura
        • December 18th, 2012

        My throat swells closed when I eat fresh fruits. How do I overcome that

      • Hi Laura, I need a lot more info to assess and advise. The Vegan Healing Diet and maybe some water fasting will clean you out and help you begin building up so you can eat your most naturally healthful food. Send me an email if I can guide you to health.

        Best healthful wishes,

        David Klein, Ph.D., Hygienic Doctor
        Director, Colitis & Crohn’s Health Recovery Center
        Ph: 808-572-0861

        PO Box 791241 Paia, HI 96779
        To order “Self Healing Colitis & Crohn’s,”please send $23.95 plus $5.15 ($16.95 foreign) shipping payable to Dr. David Klein

        Follow my daily availability schedule at

        Please see
        To receive a Health Questionnaire by e-mail, please request.

  3. “Deriving more than 10% of your calories from fat and/or 10% from protein will invariably exceed your digestive limitations, resulting in toxicosis and disease.”

    Many tribal populations of the world receive 90% of their calories from fat and protein, and live long, completely disease-free lives. Your argument is invalid.

    • Andy, have you studied nutritional science, read The 80/10/10 Diet, or The Acid Alkaline Association Diet, or China Study books, studied any nutritional science or tribes yourself? First, most people on this planet do not eat unprocessed tribal diets. Second, if you perform health diagnostics and autopsies of people who live on high-fat diets you will not find any disease-free people. High-fat diets cause degenerative diseases in every body. If you have any studies that show otherwise please present them to us. If you are just going by what you have “heard” or read in a few stories, let’s expose the myths.

      Dr. David Klein

    • km
    • March 16th, 2014

    Hi, i really don’t know whats happening. am having headaches & sometimes strange breath, what could be the problem?

  4. I just wanted to say that I really enjoyed this article. It is very informative. For example, I love that you mention the importance of combining foods properly. I have only seen that in one other source. I have been a vegan for eight years and I enjoy vibrant health. 70% of Americans are on at least one prescription medication; I haven’t taken prescription drugs in years. Unlike my friends who eat animal products, I am not plagued by any health problems. I haven’t read your book but I think it could help a lot of people. It’s a rare surprise to find a medical doctor who has a genuine desire to help people rather than profit by prescribing terrible drugs. If Americans would adopt the suggestions in this article, so many preventable deaths would be avoided. Thank you so much for doing what you do!

    • Brittany
    • July 2nd, 2014

    I am currently living in a 3rd world country. Eating veggies or fruits uncooked or not sterilized is not an option here. Also lettuce is a no no all around here. I’m interested in applying this diet, but I’m afraid of stomach infections due to bacterias in the food and lack of cleanliness.
    Is this diet functional if I need to sterilize the food? Or does all the benefits leave? Also it won’t be practical to purchase your book due to being’s gamble every time with shipping here. Thanks.

    • Brittany
    • July 2nd, 2014

    Sorry one more question…
    My husband suffers from nasal allergies really bad. The doctors in this country says he is allergic to “anything cold” ex: drinking cold water or cold foods like ice cream. To me sounds ridiculous. Also suffers from skin allergies where around his toes the skin cause small blisters that pop and then he sheds skin. AND cat allergies. Will doing a diet like this eliminate completely ALL allergies? He’s a big time rice eater and meat eater don’t know if it will be easy changing him…
    Thanks again!

  5. I am sufferig from decompositin of stool passing lot of gas negligible stool after 2 -3 days l have reed your article following guide line not much benefit pl. Suggest some medicine to control the decomposing bacteria. Dr. Ravi

    • Hello Dr. Ravi, like my article says, food is decomposing in your gut be cause you are eating indigestible foods. If you want to take medicine, you will only damage your body.You need to eat your natural diet correctly, then the food will not decompose and your will clean out and thrive. Order Self Healing Colitis & Crohn’s at and apply the Vegan Healing Diet Plan and you will be very happy. Contact me at at Happy to help you.

    • CW
    • March 28th, 2015

    Hi, I’m suffering from my food not digesting properly, I’m noticing a rotting smell from my gut which is causing my breath to be very offensive. Its really embarrassing. Many say its a oral hygiene issue. But I see my dentist regularly, excellent orally..

    • John
    • May 26th, 2015

    Hi. I’m very interested to know your thoughts about a couple of things.

    1) You say in the article “eat only those foods which are attractive to your senses, especially your sense of taste.” Now, I’m led to believe that eating *raw* onion each day is a good thing to do healthwise, but I find it very hard to eat raw onion. Would you say it’s better to eat cooked onion than no onion at all? Or better to make the effort to eat raw onion?

    2) My dad said that the doctor currently investigating his ongoing stomach pains told him that tomato seeds are a nightmare for the digestive system and are best avoided. Do you agree with this?

  6. Please read Self Healing Colitis & Crohn’s. See and

    Best healthful wishes,

    David Klein, Ph.D., Naturorthopathic Doctor
    Director, Colitis & Crohn’s Health Recovery Center
    Ph: 808-572-0861
    Skype: drdaveklein
    PO Box 791241 Paia, HI 96779

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