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The Psychobiotic Revolution: Mood, Food, and the New Science of the Gut-Brain Connection

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Written by the leading researchers in the field, this information-rich guide to improving your mood explains how gut health drives psychological well-being, and how depression and anxiety can be relieved by adjusting your intestinal bacteria. This groundbreaking book explains the revolutionary new science of psychobiotics and the discovery that your brain health and state of mind are intimately connected to your microbiome, that four-pound population of microbes living inside your intestines. Leading medical researchers John F. Cryan and Ted Dinan, working with veteran journalist Scott C. Anderson, explain how common mental health problems, particularly depression and anxiety, can be improved by caring for the intestinal microbiome. Science is proving that a healthy gut means a healthy mind—and this book details the steps you can take to change your mood and improve your life by nurturing your microbiome.

311 pages, Kindle Edition

Published November 7, 2017

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About the author

Scott C. Anderson

3 books8 followers
Scott Anderson was born on an American Airbase in Frankfurt, Germany and shuttled around the world, as Air Force brats are wont to do. After graduating with a degree in physics from Sonoma State University, he proceeded to program and write about computers and technology. He wrote Supermap, published by Apple; Datadex, published by IUS; and Fantavision, published by Broderbund. He wrote a book on tweening, warping and morphing called Morphing Magic, which included open-source C code.

Anderson co-created LEGO Island with Wes Jenkins, Dennis Goodrow, Paul Melmed and Dave Patch in 1997. With Dr. Ann Kiessling, he wrote Human Embryonic Stem Cells, published by Jones & Bartlett in 2006. Anderson coauthored The Psychobiotic Revolution with John Cryan and Ted Dinan, published by National Geographic in 2017.

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Displaying 1 - 30 of 104 reviews
Profile Image for Chrisl.
607 reviews87 followers
November 21, 2017
After 60 pages, the stickies for passages to re-read were a thicket.

Feeds long term interest in subject. Useful index, appendix, and further reading list.
Well done. Like the format. Teaching me. Let the quotes begin:

"The community of microbes living in your gut--your so-called microbiota--is like another organ of your body. It's a seething alien living inside you, fermenting your food and jealously protecting you against interlopers. It's a pretty unusual organ by any measure, but even more so in that its composition changes with every meal.

"It's not just made of bacteria. Your microbiota is also home to ancient life-forms related to the colorful creatures that tint hot springs, called Archaea. It includes the kings of fermentation, the yeast. It hosts swimming single-celled protozoans, constantly on the prowl. It also includes an even more insane number of viruses, as small relative to bacteria as bacteria are to human cells. Your gut microbiota is spectacularly cosmopolitan, making it a challenging beast to study.

"Your microbiota communicates directly with your second brain, a phrase coined by Michael Gershon in 1998 to refer to the network of nerves surrounding your gut. A good set of microbes encourages this second brain to keep the feast moving. For good health, including mental health, the food you eat needs to be good for you and for your microbiota ... including what we now call psychobiotics." ...

"Research keeps unearthing connections between seemingly unrelated gut and brain diseases. What do skin diseases like psoriasis and eczema have to do with brain problems like multiple sclerosis (MS)? The surprising connection is the gut microbiota. Even seemingly intractable conditions like autism may be improved with psychobiotics. Normal social bonding may depend on a healthy gut."

... "We underestimate these tiny creatures at our peril. So-called single-celled bacteria can in fact form great citylike complexes composed of several different species living harmoniously in a biofilm. It sounds exotic, but you step on biofilms every time you walk over a lichen-covered rock. The biofilms in and on your body are related to lichen, and share their features of resilience and togetherness.

"Biofilms are marvelously complex. They have pores for pumping nutrients, acting as a basic circulatory system. They maintain a protective coating--a primitive skin--that holds water in. The various species communicate with each other, using signaling molecules, including neurotransmitters ... they have in essence become a hardy, multicellular organism.

"The biofilms are everywhere, from your mouth down to your anus. In your mouth, you might know it as plaque. In your intestines, a pathogenic biofilm might be behind Crohn's disease. These biofilms are unavoidable. Fortunately, you can put them on your payroll. ... Properly established, a compatible biofilm can lead to a lifetime of gastronomic bliss, unburdened by inflammation and its frequent companions, depression and anxiety.

"A microbiota that is unbalanced and that provokes an immune response is called dysbiotic. It can lead to inflammation, which is a significant contributor to depression and anxiety. Worse yet, it is a major predictor of mental decline ..."

... "The first theories about the gut-brain connection go back to the 18th-century French anatomist Marie Francois Xavier Bichat, who discovered that the gut has its own nervous system, independent of the central nervous system. It isn't organized in a lump like the brain but rather as an intricate double-layered lacework surrounding your entire gut like a tube sock. Bichat also, far ahead of his time, saw the connection between emotion and the gut, and situated the passions in the 'epigastric center,'as he called it. At the end of the 20th century, the concept was dusted off and better defined by Michael Gershon, who dubbed the intestinal nervous system the 'second brain' in a book with the same name."

... "At the beginning of the 20th century, a French pediatrician named Henri Tissier ... discovered that babies fed on mother's milk had a population of unique microbes he called Bifidobacteria ...

"Tissier ... had two experimental groups of babies: bottle-fed and breast-fed. In the poop of children reared on cow's milk, Tissier didn't find Bifidobacteria. These babies were also not as healthy ... in fact, bottle-fed babies at that time were dying at seven times the rate of breast-fed babies." ...

"We are going to be talking enough about Bifidobacteria that we can nickname it Bifido. ...

"Tissier couldn't know that Bifido, along with other microbes, were not only helping with digestion but were also educating the baby's immune system. Without that basic education the immune system can mistakenly attack beneficial bacteria and even the baby's own cells. That can lead to inflammation and may plant the seed for depression and anxiety as the baby grows. Depression and anxiety can have many roots, but this one may start to grow even before the baby is born."

... "Bercik also tried fecal transplants between mice with specific behavioral traits and found that some of those traits transferred with the feces. When they took feces from an exploratory mouse and transferred it into a timid mouse, exploratory behavior transferred, too." ...

"When you wake up craving a doughnut, where do you think that idea came from? Your cravings are often just committee memos sent up from your gut microbes. They contain a complete list of the carbs, sugars, and fats they are looking for.

"Here's an example of how that works. Some microbes, especially our friendly Bifido species, produce butyrate, which feeds and heals the lining of your gut. Butyrate can make its way to the brain, where it can induce a good mood, dampen inflammation, or encourage the production of a brain-growth hormone."

"Your Bifido thrive on the fiber in your diet. If you feed them fiber and find your mood improving, over time you will start to yearn for the fiber that makes you feel good. That is a simple Pavlovian way to create a craving. Your Bifido has conditioned you to feed it." ...

"Cravings undergo a major change in people who have gotten a stomach bypass to lose weight. They have a completely different microbiota and brand-new cravings. In fact, much of the weight loss attributed to a smaller stomach is actually due to other factors, including changing tastes. Studies are starting to indicate that much may be due to the altered microbiota." ...

"Our cravings seem like an integral part of our psyche ... But when you think of your cravings as microbial longings, it may be easier for you to take back control." ...

Profile Image for Kitten Kisser.
435 reviews18 followers
September 19, 2017
As a person who has suffered with digestive issues for over 10 years, I have read a lot of books. I followed a lot of advice in a wide variety of said books claiming to fix what ails me but most of it made me worse until I started following Digestive Health with Real Food: A Practical Guide to an Anti-Inflammatory, Low-Irritant, Nutrient Dense Diet for IBS & Other Digestive Issues. After a few years of strictly following that diet I discovered FODMAPs. FYI, you don't need a bunch of books on FODMAPs. I highly recommend: The Complete Low-FODMAP Diet: A Revolutionary Plan for Managing IBS and Other Digestive Disorders & the cookbook (the recipes are sooo good) The Low-FODMAP Cookbook: 100 Delicious, Gut-Friendly Recipes for Digestive Disorders including IBS, Crohn's, and Colitis
Around a year ago I read Gut: The Inside Story of Our Body’s Most Underrated Organ. I loved this book so much I got the Audible edition next. The next book on the topic I read was The Gut Makeover: 4 Weeks to Nourish Your Gut, Revolutionize Your Health, and Lose Weight & now this book. So far out of all the books, my favorite is still the first I read. However this book falls in second place. I love learning about the inner workings of our body. The more that is discovered, the better I am able to understand & take control of my own health. The most interesting part to me is the one thing that still hasn't changed no matter what new things are discovered about our amazing bodies & that is in order to be healthy we need to eat a variety of vegetables, healthy meats (not factory crap), & fermented foods.
This informative book covers a lot of ground regarding what they call 'physcobiotics' these are basically foods that affect our mood. The premise is that our gut bacteria control our cravings & our mood. If our gut bacteria contains too many of a bad type of bacteria we may crave more of what that bacteria eats. This could be why some of us crave potato chips & others chocolate. - I recently read an article where in the US most women crave chocolate for "that time of the month" but in other countries women craved rice or fish. - The idea is that by eating better, we will feed the good bacteria & over time will reduce or eliminate our cravings for unhealthy foods & improve our mood. By eating good healthy foods & having happy belly bugs, we will likely loose weight, feel better (both physically & mentally), avoid many diseases, heal our bodies & our minds.
The book discusses proboitics that have been tested & proven. Yet one of these, Activia (yogurt you can find pretty much in any chain store) contains sugar. The author recommends avoiding sugar in yogurt because it negates the benefits. I have looked for plain Activia & it doesn't seem to exist. There are other probiotics mentioned. One seemed like it might be perfect for me, but it is banned in the United States. I have decided to order some organic yogurt cultures from a seller on Etsy (WellsOfHealth) that I've bought from in the past with excellent results. I am able to access my own fresh jersey cows milk, so all I need are the cultures. In the meantime I've been adding more yogurt to my diet. I came across a Oui by Yoplait (available in plain & packaged in glass) & the Simple Truth brand by Kroger that seem pretty good until I can start making my own.
Overall if you are looking to improve your health in any way, you will want to read this book & many others like it.
Profile Image for Alien Bookreader.
330 reviews35 followers
May 22, 2023
An overview of some of the interesting connections between gut bacteria, mental health and physical health. The science is summarized and footnoted. The book goes in more of a self help direction. The final conclusion is simplistic - all mental health problems could be solved with the right gut bacteria. This knocks down a 4 star book to 3 stars.

The brain is more complex than any other organ in the body, and mental illness like depression and anxiety (frequently mentioned in the book) are multifactorial. You cannot convincingly claim that a single factor like gut bacteria will solve these issues. Gut bacteria is important, but the author oversells it as a miracle cure.
Profile Image for juliemcl.
136 reviews4 followers
March 11, 2018
If there’s one takeaway it’s that there is much more research to be done & much more to be discovered about the gut-brain axis. The workings of the human body are still mostly a mystery, medicine still more of an art than a science. A book like this can help a person to Be One’s Own Doctor even if it doesn’t definitively answer questions like what probiotic I should buy for a particular condition. While the book does point towards some products/strains to try, this part is a little frustrating because it seems that the most promising formulations, with good research to back them up, have yet to hit the market, but that’s of course not the book’s fault. The book presents a good overview, in any case, of recent and current research.
Profile Image for Diego Lovegood.
297 reviews66 followers
January 2, 2023
Quedé para la cagá con este libro. Desde hoy solo se come chucrut y kefir.

Profile Image for Erica.
123 reviews1 follower
June 17, 2018
Fascinating! I thought I knew quite a bit about gut bacteria and how it controls pretty much everything we do, but this book blew my mind! Not an easy read, which kind of bums me out—everybody should know that they can control their moods, psychological disorders, and autoimmune diseases by eating the right foods. But it makes me hopeful that this relatively new research will be going mainstream soon.
Profile Image for Manda Scott.
Author 28 books609 followers
July 28, 2018
Fascinating, life changing read

A detailed, readable, informative and accessible insight into the role of gut bacteria in everything from mood to Alzheimer’s. If this doesn’t make you give up sugar, nothing will....
Profile Image for Rosa Toonen.
10 reviews1 follower
July 21, 2022
This book gives you a fantastic insight in how our gut microbiota and brain are intertwined. I'm really interested in microbes in general and also because of my education in biology and to read about their enormous influence on us and our mood is very interesting. The downside in my opinion is that the content is too much focused on only America and their statistics of diseases or when a pre- or probiotic is accepted as safe. Probably expected as the authors are American haha. In short, this book gives you a broad overview of the role our gut microbes play a role in diseases and our mood and what is going on with the 'latest' research and on top of that Scott Anderson makes a lot of fun jokes and often I was laughing out loud, what makes this book also quite light :).
This entire review has been hidden because of spoilers.
Profile Image for Lea.
61 reviews1 follower
March 26, 2023
Literalmente una revolución, este libro esta lleno de información que te invita a reflexionar como estamos dañando nuestra salud y la de los demás. Actualmente vivimos en un mundo demasiado alejado del la salud de nuestra microbiota, en lugar de ver a estos pequeños seres (bacterias, hongos, protozoos...) como amigos, es todo lo contrario (agredir con dieta occidental, sedentarismo, falta de convivencia con la naturaleza, polifarmacia...). Por ello leer el siguiente libro nos ayudara tener una relación simbiotica de mutuo beneficio ahora en adelante...
Profile Image for Natalie Yuhas.
99 reviews3 followers
August 12, 2020
I enjoyed this book for reasons not related to why I picked it up in the first place. It was a fun, yet science-heavy read on the digestive system, and I especially liked learning how exactly the immune system works via the gut. There is still a lot to be discovered and learned about the connection between mental health and gut microbiota, so that part was a little shaky. Overall, the authors did a good job of making the information accessible and interesting.
Profile Image for Margaret.
1,025 reviews6 followers
July 18, 2019
An interesting book correlating mood with the digestive system. A bit too detailed for my taste but I suppose it is important to fully understand the content. I hope to explore this subject more fully.
7 reviews1 follower
September 21, 2019
One of the best books on medicine of the gut microbiome. Explores some really exciting science that will likely revolutionise medicine of the 21st century and beyond.
15 reviews13 followers
October 17, 2019
The gut-brain axis and genetics will be the next revolutionary advances in medicine. This book summarizes the first one very well.
Profile Image for Ashley Chu.
67 reviews
May 8, 2023
yogurt is king. your gut has a brain of its own. everything in moderation but less meat in general lol.

scoring ~
⭐️ 1. content interesting to me
2. technical writing style
⭐️ 3. evokes feelings & empathy
⭐️ 4. learning opportunity
⭐️ 5. bonus
Profile Image for Matthew.
159 reviews1 follower
November 29, 2017
Really informative look at how our microbiota, our “gut bugs” can influence our mood and health. I really enjoyed the early chapters because they seemed to be based on more solid scientific ground. The further you go into the book the more “hypothetical” the book becomes -- not because the authors are sloppy, but because the research in this burgeoning field just hasn’t been completed yet.

The book offers a thorough explanation of our microbiota and how our enteric nervous system, this “second brain” interacts with our regular nervous system, immune system, and endocrine system. Would have liked a little more information how the microbiota interplays with epigenetics, but that’s another frontier of science that probably has not yet been fully explored.

One quibble, there’s a rather protracted discussion of antibiotics and despite their life-saving powers, they can often unintentionally destroy a healthy gut. But in the recommended foods to promote a healthy gut, they include fish, chicken, and eggs; despite those industries (along with farmed fish) often being some of the biggest users of antibiotics.) There is a single mention of this danger (just not near the psychobiotic food pyramid section), and urges antibiotic-free fare but it would be nice if that caveat was a bit more front and center with the recommendations, the way the authors concurrently remind of the danger of mercury in fish when listing foods.

The book is well written and offers some solid pointers. The single best take-away of the book would probably being: “don’t eat junk food, eat more fiber” for a healthy mind, body, and microbiota. Definitely worth a read!
Profile Image for Vasco.
451 reviews23 followers
July 23, 2018
The bad: nothing in particular.

The good: it's an excellent book on the functioning of the gut and its microbiota and ecosystem, as well as the effect of multiple foods and substances in it. I don't consider it a five-star book for the actual value proposal, which is psychobiotics - substances that improve mood through their benefital effects on the gut - but as an excellent summarised book on all previous content I had read about gut and the effect of foods, substances, exercises, and much more. I consider it an interesting and comprehensive compendium on the gut. To re-read.
Profile Image for Constance.
320 reviews2 followers
January 22, 2018
Very interesting. Not too technical, but technical enough to explain aspects of the human diet that we’re often too complacent to ask questions about. I learned more about why we should eat certain foods over others. Not an easy read, so be prepared to check the pantry and look at labels and think more about how what you eat affects your mind and mood and gut. An excellent resource as well. Good index!
Profile Image for GONZA.
6,476 reviews112 followers
November 8, 2017
Interesting but not an easy reading, most of the times I had to use my former knowledge about biology and chemistry, but in the end it was worthy.

Interessante, ma certo non classificabile come lettura facile, anche perché per fortuna avevo una conoscenza precedente di chimica e biologia altrimenti non l'avrei finito. Valido, ma non per tutti!

February 9, 2022
A short read, and even shorter if you skip the first half of the book. The most interesting parts are really the list of psychobiotic strains and the discussion of diet.

It’s disappointing that the research is pointing in very clear direction but psychiatrists aren’t even discussing this with their patients as an add-on to their medication.
Profile Image for Kathryn.
4 reviews
February 3, 2018
Intriguing topic but I think the authors jump to conclusions without enough evidence to back up some of their theories.
Profile Image for Tesha  Fritz.
49 reviews1 follower
January 2, 2022
Great information. Hang in there with the scientific parts to get to the practical information. It all fits together in the end.
5 reviews
October 25, 2022
Interesting subject matter on the young history of "psychobiotics" but makes too many large leaps and unsubstantiated claims about a relatively unexplored area of nutrition research.
Profile Image for Kate Kinne.
91 reviews
May 18, 2022
There were some pretty sweeping generalizations made for many of the studies having only been performed on rats. I did learn a couple of things though.
Profile Image for Bernie Gourley.
Author 1 book91 followers
December 12, 2017
For centuries there have been cases in which a change in diet --often accidental-- led to relief from a mental illness. However, given the sporadic nature of such effects and the complete lack of understanding of microbes, the enteric nervous system (i.e. the gut’s own “brain” that communicates with -- but is also autonomous of -- our “first” brain,) and the complexity the symbiotic relationships involved, these anecdotal cases had limited influence on the state of medicine. However, recent years have seen an explosion of understanding in this domain. This has resulted in a vast number of books being written on the role of microbes in the gut for overall health, the role that changing diet can have on changing our microbiome, and related topics such as how the overuse of antibiotics can have a deleterious effect on health by tossing out the microbial baby with the bathwater. This book touches on all those topics (and more) as it explores the role of our bacterial hangers-on on our mental health.

The book consists of nine chapters. The chapters are organized so as to first present one with the necessary background to understand how changes to one’s gut microbiome can improve one’s health —particularly one’s mental health (though many of the mental illnesses influenced by microbiota are linked to physical ailments)— before moving on to the specifics of what microbes have been shown to have a given effect and what diseases can be influenced by consumption of probiotics.

The first five chapters give the reader an introduction to the topic and an overview of information one needs to know to understand the later chapters. Chapter three gives one an overview of the changing profile of one’s microbiota over the course of one’s life. Particular emphasis is given to one’s youth and to the transfer of bacteria to infants. [Readers may be aware of the problem that c-section births result in a failure of babies to receive a dose of beneficial microbes imparted by passage through the vaginal canal.] Chapter four takes one on a quick ride through one’s alimentary canal from mouth to rectum, with particular emphasis on questions such as how bacteria survive the stomach’s acid bath, and which parts of the digestive system contain which microbes (and to what effect.)

The last four chapters dig deeper into the specifics. These chapters look at specific probiotics, how one can get them into one’s system, and what science has found out about probiotics and psychobiotics (like probiotics, but specifically ones that influence mood and mental states) effects on specific ailments. Chapter eight, which deals with major diseases, does cover physical ailments as well as mental ones because – as mentioned— these afflictions often go hand-in-hand. The last chapter (Ch. 9) looks at where this body of knowledge is going. It delves into practices that are presently well-established, such as fecal matter transplants, but also into challenging works-in-progress such as attempts to develop narrower spectrum antibiotics so that we can get the life-saving benefits of these medications without their crippling side-effects.

The book has many graphics, as one would expect from a work that investigates such a complex scientific topic. I can’t really speak to the quality of the graphics as the review copy I read didn’t have completed graphics. However, the subjects of the graphics seemed appropriate and well-placed. The book also has a glossary, annotations, and a further reading section to assist the reader in the study of this subject.

I found this book to be informative and engaging, and would highly recommend it for anyone interested in the role of microbiota on mental health. The text was well-organized and readable. Given the scientific nature of the material, it’s easy for such a book to become ponderous, but the authors made attempts to keep the tone light and the presentation non-intimidating.
Profile Image for Arlena.
46 reviews
May 26, 2019
The information presented in this book has helped me understand the scientific backing of a topic that I have felt is a big deal, for a long time. You know on the movie, My Big Fat Greek Wedding, how one of the relatives uses Windex as a fix for EVERYTHING? That is me! Except instead of Windex, I use probiotics (and more recently, prebiotics).
On a more serious note, I have been dealing with anxiety/depression lately and in the month that I have been doing what I can to increase my good gut flora, I have noticed a significant difference. I don't take medication for my anxiety/depression, because I am breastfeeding, so I have struggled with options for what to do, aside from exercise and therapy (which I also do). I had heard about psychobiotics, and since they were in-line with my love of anything to do with probiotics, I decided to learn more.
This book took me a bit to get through, but it does a good job of explaining the gut-brain-axis. To be honest, my primary care physician told me verbatim that the brain can speak to the gut [with regard to serotonin levels], but that it's a one-way road and the gut does not speak to the brain... while that may be true on some level, it is very clear to me (after reading this book), that gut flora indeed can influence serotonin levels in the body, among many other things, and therefore the gut does speak to the brain.
Ironically, when I started having anxiety problems, I also started dealing heavily with gut problems, and apparently this is quite common. This book suggests that if you fix the gut and its microbiota, you can (possibly) fix your anxiety and depression. It may seem too easy, but for me there has been such a difference that I want to tell all of my loved ones who deal with anxiety and/or depression, to read this book and learn about how the microbiota in the gut can influence the brain and body. For me, it was a no-brainer to try it out, and I am so, so glad that I did.
Profile Image for Kiren Chaudhry.
18 reviews1 follower
January 31, 2018
The first part of the book is like an episode of the magic school bus taking you thru a tour of your microbiota and its history. I’m a huge proponent of accessible reading. A good little ride along for some cool, basic bio concepts. The second part gets a little more instructive as to what might ail you and what you might need to supplement. Overall it’s an informative read, I didn’t love how it lumps all mood disorders together, ( I mean there’s an entire DSM V for a reason). I guess you’re getting the reader digest version ( pun intended). It references animal model studies a lot which makes sense because psychobiotics are new or rather newly resurfaced topic for discussion in science with cutting edge kinda gross stuff taking place mostly aboard Georgia, Poland ( soon to be co-opted and capitalized on by biohacking tech bros I’m certain). Also made me think about how American drug and supplement scheduling takes place.. double blind gold standard trials and more noisy data and less efficacy for everyone. Thanks BigPharma... Overall nothing earth shattering mostly makes a case for lifestyle changes which we for the most part know about…but culturally there are huge barriers to implementing such changes. Maybe it should be considered a milestone for public health that life style change is even on the table for discussion these days. My takeaways are more yogurt, kimchi,sauerkraut, fiber and veggies because I’m a 90s baby when docs believed in the scorched earth policy and I got broad spectrum antibiotics like they were M&Ms. I wish the book went into bioavailability of nutrient for people with compromised microbiota, but overall a good quick enjoyable read.
Profile Image for Debbie.
3,276 reviews61 followers
September 14, 2017
"The Psychobiotic Revolution" is about how certain gut microbes positively or negatively affect your mood and what you can do about it. The main author wrote in a mildly humorous way and for the common person. While he'd use scientific terms, he immediately defined or described what those terms meant. The other two authors are people actively doing research in this field. They double-checked the content of the book and were occasionally quoted when explaining something they've discovered.

Much of the book was an overview of what we know about gut microbes--what they are, how they might affect our moods, how our gut microbe composition changes from birth to death, how it changes from your mouth to toilet bowel, and such. The last chapters talked about helpful probiotics (including what to look for in a probiotic) and how to change your diet to support psychobiotics and discourage microbes that can make you depressed or anxious. They looked at common health conditions that are often accompanied by depression or anxiety and talked about what probiotics have been found helpful in studies. By the end of the book, the reader is equipped to make positive changes. Overall, I'd recommend this interesting book.

I received an ARC review copy of this book from the publisher through Amazon Vine.
Profile Image for Shichan Shen.
59 reviews1 follower
January 10, 2021
This book is ideal for anyone with digestive problems coupled with depression and anxiety. The thesis of this book is about how a imbalanced microbiota in the gut affects your mental health and vice versa.

The first few chapters are like a crash course into how your gut works, background information regarding the discovery of bacteria, and their psychobiotic effects. There were a few case studies along the way to support the arguments.

If you’re only interested in how this book can help you and not so much the science part, you can skip directly to chapter 7. Chapter 7 provides very actionable suggestions such as choosing the right probiotic strains, understanding the significance of diet and how to adjust it accordingly.

This has motivated me to make lifestyle changes and put more effort in watching what I eat because it seems like many health afflictions stem from gut imbalances.

Whether the suggestions really help is still up for debate. I’ll do a follow up review again a few months.
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