Algorithm Personal diet 
Compiled by Walter Sorochan Emeritus Professor San Diego State University

Posted July 4, 2019; Updated October, 2021 Disclaimer This article is work in progress.

There is a lot of confusion and misinformation about nutrition, food, weight loss programs, losing weight, diabetes, chronic diseases and the algorithm diet. All of a sudden everyone is a self-made expert. Writers are writing about algorithm diets and giving this information their own spin or twist.

This article brings the best articles about Algorithm personal diet in one place and personally review the information in simple wording and easy to understand format. You can then become more informed and learn more. You can also go to the references and check the articles and authors as well.

Scientists and everyone else are just beginning to realize and understand that each human body is very unique and special. Each person has biodiversity, which means that each body is slightly different in not just appearance but how the body works and how the body adapts to its environment. Reseachers Segal and Elinav in the Israel study  Zeevi: Personalized nutrition with glucose 2015 found that people respond to similar foods in wildly different ways. Even the same person will change over time and this may necessitate for an aging person to also change the diet.

Outcome of Israel study: Article by Mahood: Gut bacteria predicting diet is no longer active.  Zeevi: Personalized nutrition with glucose 2015

  • Israeli algorithm machine personalized diet is based on scientifically linking glucose, food and bacteria.
  • Subjects in study included normal healthy, diabetics, and obese persons; with implications for chronic diseases like cancer and heart disease.
  • Biodiversity: the human body is unique and each person's body is different.
  • No two people have identical responses to the same meal.
  • Gut microbiota [bacteria] are essential in the prediction of post meal blood glucose.
  • Bad foods feed bad bacteria while good foods feed good bacteria. What we eat determine the bacteria in our colon.
  • Approximately 20% of our microbiome diversity is associated with environmental factors such as diet, drugs, activity, smoking, and quality of life.
  • It is not simply genetics, but also the microbes that live in our gut that make us who we are.

The researchers in Israel found that two different people eating the same food will respond differently to that food. They crunched hundreds of factors to make personalized dietary plans for controlling blood sugar or glucose. The scientists also developed an algorithm [machine program that provides information] that accurately predicts post-meal blood sugar levels [glucose] based on a person’s individual biological makeup and lifestyle  — throwing into question standard dietary recommendations.

The Israel study is a landmark one in that it makes all the previously known information about food, nutrition, weight loss, the practice of medicine  and even chronic diseases questionable and outdated. The study combines several key factors in preventing chronic diseases .... like food, bacteria in the colon and blood sugar or glucose. The Israel study was done using food eaten by people in israel.  A similar study was also done in 2018 on an American diet that confirmed the findings of the Israel 2015 study. Mendes-Soares: Duplicate Israel study 2018 Both studies will revolutionize how we will eat and what we will eat in the future.

Below is a simple and short video that explains algorithmic approach to eating and food choices:

Video Segal and Elinav, algorithm personalized diet; length=5:26 mns.

 Source Segal: Algorithm diet 2017

You can read the graphic details of the Israeli study in: Israel Segal study or if you want to hear Professor Segal explain this algorithm personalized diet in detail, then you should listen to a longer video:

Eran Segal, Personalized nutrition diet, length = 58:55 mns.

Source Segal: Algorithm diets

Most fad diets do not work for everyone, regardless of what someone preaches or claims in a written diet book, though that doesn't stop friends from promoting the diet that may work for them. The reality is that our body changes as we age. We become less attractive as we grow older. Because body image is subjective and changes with time, people are ripe for exploitation. They also tend to trade diets, offering advice to friends on what worked for them but may not work for their friends.

So what is the best diet?

Video Ted - Eran Segal: What is the best diet for humans?" Length = 19:12 mns.

Segal: Best diet for humans

Abstract Israel algorithm nutrition study: "Elevated postprandial [after meal] blood glucose levels constitute a global epidemic and a major risk factor for prediabetes and type II diabetes, but existing dietary methods for controlling them have limited efficacy. Here, we continuously monitored an Israel group of people, an 800-person cohort, for week-long glucose levels, measured responses to 46,898 Israel meals, and found high variability in the response to identical meals, suggesting that universal dietary recommendations may have limited utility. We devised a machine-learning algorithm that integrates blood parameters, dietary habits, anthropometrics, physical activity, and gut microbiota measured in this cohort and showed that it accurately predicts personalized postprandial [after the meal] glycemic response to real-life meals. We validated these predictions in an independent 100-person cohort. Finally, a blinded randomized controlled dietary intervention based on this algorithm resulted in significantly lower postprandial responses and consistent alterations to gut microbiota configuration. Together, our results suggest that personalized diets may successfully modify elevated postprandial blood glucose and its metabolic consequences."  Zeevi: Personalized nutrition with glucose 2015

Writer Melissa Dahl has it correct when she writes that "just because some eating habit works for somebody else, that doesn’t necessarily mean that it’ll work for you. Everyone’s body is different, of course, which means everyone’s body responds to food a little differently. And this, some scientists across the globe are now arguing, points to the potential future of healthy eating. The key to fighting the increasing threat posed by diabetes and obesity may be personalized diets — that is, eating plans tailor-made specifically for each individual — instead of the generalized nutrition guidelines we have now."  Dahl: Future dieting is algorithmic 2017

Currently, there are two leading companies stating that they have mail kits to fix your diet and colon bacteria. Viome, a Bellevue, Washington based firm, charges $399 for its annual plan which includes in-home testing kit, analysis of gut health and personalized diet plans. It uses gene-sequencing technology to analyze bacteria, viruses and fungi in the gut. Viome compares users’ microbiomes from 800 individuals in the company has preselected as healthy specimens and promises broad advice on foods to eat or avoid to improve glucose response, enhance sleep and focus, and reduce anxiety. Another Israel company, DayTwo, will send you an easy-to-use stool sample kit for $349, and analyze it by measuring glycated haemoglobin (HbA1c) [ blood glucose]. Their clinicians will provide dietary recommendations based on a proprietary algorithm that was developed as part of research conducted at the Weizmann Institute of Science.  Guday: Gut bacteria kits 2018  Nedelcheva Day Two kit 2019

Researcher writer and health educator Sorochan doubts that these two mail-kits can fix your diet with just one sample of feces analysis. It just cannot be done because you need a before and at least two or more after feces tests. This entire testing process may drag for months. The two companies do not include an after-feces test unless you pay extra. The tests are generic and are not specific which means that the tests are really too general. To work properly to the advantage of the individual, you need to adjust and then stabalize the bacteria in your colon over several weeks using an elimination diet; something these commercial diets do not tell you. Finally, it takes at least a week to change the bacteria in the colon and then stabilize with a long term diet. The tests are not covered by any insurance! So you pay for a fix that probably at this time may not work.

Conclusion:There is a whole lot more research and fine tuning needed before the Israel research can be applied to the general population in any country. But the Israel study has put researchers on the right path to personalize food items that will adjust the colon bacteria and minimize the risk of diseases while at the same time enhance optimal wellbeing.

The Israel study also questions today's validity of Recommended Dietary Allowances, nutritional tables, nutritional expertise, medical therapies for chronic diseases and preventive measures for better health.

These cautionary comments should not discourage you from fine tuning the bacteria in your colon while waiting for a better Algorithm personalized diet which may be years away. Meanwhile you can use a common sense approach of changing your diet. Eliminate the bad foods like pastry, sugar,  processed foods, soft drinks, minimize meat and substitute more fresh raw vegetables and fruits. Most persons are addicted to comfort foods that  feed bad bacteria in the gut, that in turn, disrupt the desirable balance of 80% good bacteria and 20% bad bacteria.  Sorochan: Foods- bad & good 2019 Sorochan: Losing weight by fixing colon bacteria 2019

There is a hidden danger in changing the foods you eat and losing body weight. Changing a diet can can disrupt the nutritent needs and mineral balance in the body. You need to do so with medical supervision.

Your body is naturally programmed to survive and self-heal itself, even when you eat bad food or have crazy things happen like accidentally breaking a leg or arm. The human body has a natural built-in chemical lab that can tell you instantly whether a food is good or bad by sending you signals as symptoms like bloating, stomach pain, diarrhea, constipation, flatulence or gas, vomiting, inflammation, coughing, itchy nose, skin changes, Gurd or Reflux and so on.

For example, how a person defecates, or passes a stool, can tell a lot about the kind of bacteria in the colon and even the kind of food one is eating.  Passing a stool should be easy to pass and the texture should be soft, not watery as in diarrhea and not hard as in constipation. Bad foods usually cause constipation.

You need to learn to recognize and interpret these signals for what they are trying to tell your brain. These symptoms suggest that you need to become an instant detective and find out which food item in your diet caused these symptoms or allergy, then use the elimination diet as a way of detecting the bad food. Such detection may take several weeks or longer but eventually you can identify the guilty food and eliminate it from your diet.

This is exactly what the Algorithm diet does by using a glucose ACG skin patch to identify, much more accurately than just guesswork, which food causes the blood sugar or glucose to spike or shoot up as in a diabetic. However, such a scientific approach is used by what mother nature pre-programmed into your body as part of fixing and healing your body, is free and costs nothing but patience and learning to recognize the symptoms and how your body works. Just learn how to help your body use its healing system!


ACSH staff, "The algorithm for the perfect diet," American Council on Science and Health. December 6, 2015.  ACSH staff: Algorithms perfect diet 2015

Dahl Melissa, "The future of dieting is personalized algorithms based on your gut bacteria," The Blog, December 06, 2017.  Dahl: Future dieting is algorithmic 2017

Elinav Eran and Eran Segal, "Post-diet rebound," Weizmann Direct Vol. 4 Issue 1, January 29, 2017.  Elinav: Post-diet rebound 2017

Georgia State University, "Diabetes linked to bacteria invading the colon," ScienceDaily, 30 May 2017.  Georgia St Univ: Diabetes & colon bacteria

Guday ali, "Personalized diet based on your gut bacteria," Gut Harmony, March 8, 2018.  Guday: Gut bacteria kits 2018

Hall Heather, and others, "Glucotypes reveal new patterns of glucose dysregulation," PLOS. July 24, 2018.  Hall: Glucose diabetes study 2018

Mahmood Fatima, "The importance of the gut microbiome in predicting dietary responses," DNA Genotek's Microbiome Collection and Stabilization Blog, April 2, 2019.  Article by Mahood: Gut bacteria predicting diet is no longer active.

Mendes-Soares Helena and others, "Model of personalized postprandial glycemic response to food developed for an Israeli cohort predicts responses in Midwestern American individuals," Mayo Clinic, Rochester, Mn, May 16, 2018.  Mendes-Soares: Duplicate Israel study 2018

Nedelcheva Kalina, "Day Two Offers a Hassle-Free Way to Control Blood Sugar Levels," Feb 12, 2019.  Nedelcheva Day Two kit 2019

Rodríguez Juan Miguel and others, "The composition of the gut microbiota throughout life, with an emphasis on early life," Microb Ecol Health Dis., February 3, 2015.  Rodriguez: Microbiotia throughtout life 2015

Sorochan Walter, "Foods - good & bad,", May 25, 2019.  Sorochan: Foods- bad & good 2019

Sorochan Walter, "Healing,", August 24, 2016.  Sorochan: Healing 2016

Sorochan Walter, "Obesity: Weight loss by fixing bacteria in colon,", June6, 2019.  Sorochan: Losing weight by fixing colon bacteria 2019

Valdes Ana and others, "Role of the gut microbiota in nutrition and health," BMJ June 13, 2018.  Valdes: Bacteria in health and disease 2018

Yong Ed, "The Algorithm That Creates Diets That Work for You," SAcience, Nov 19, 2015.  Yong: Diets that work 2015

Zeevi David, and others, "Personalized nutrition by prediction of glycemic responses," Cell, 2015.  Zeevi: Personalized nutrition with glucose 2015

Zeevi David and others, "Structural variation in the gut microbiome associates with host health," Nature, March 27, 2019.  Zeevi: Microbes and health 2019