
-David T. Rubin, M.D., Professor of Medicine, Chief, Section of Gastroenterology, Hepatology and Nutrition at University of Chicago
For 20+ years, I’ve been a practicing gastroenterologist and host of Ask Dr. Nandi — a show that’s aired in 95 million homes across 7 networks and over 80 countries.
But none of that is why I’m here.
In 2007, my father — my hero, my role model, and the smartest man I knew — collapsed from a massive stroke.
We rushed him to the hospital, and the doctors ran every test. Every scan. Every lab.
They had no answer as to why a seemingly healthy person had just suffered a massive, life-altering stroke.
After that night, I realized how little even we doctors truly understood about the brain and why it fails.
It sent me down a 15-year rabbit hole to uncover what the scans and pills were missing.
What I found changed everything about how I practice medicine…
…and it’s what I’m going to share with you here today.
These outdated beliefs are still being taught in med schools and passed from doctor to patient every day.
And they’re not just wrong… they’re dangerous.
Your gut and your brain are on a direct line through the vagus nerve…
And your gut does most of the talking.
So when you feel foggy… when your mood crashes… when your energy tanks…
That’s not aging…
That’s your gut sending distress signals.
In fact, your gut sends 10x more signals to your brain than the other way around.
That’s why gut issues like bloating, inflammation, or bad bacteria can show up first as:
(your “feel good” neurotransmitter)
(your motivation and reward chemical)
(the calming chemical that helps reduce anxiety)
There’s plenty more where that came from…
And it all flies in the face of what most of us have been told about brain health, our genetics, and our fate as we age.
For one, it means you have a right to be concerned about yourself and your loved ones…
And it also means the symptoms you’re feeling aren’t random.
Even small changes in your gut health can lead to immediate discomfort, both mentally and physically.
Fortunately, the reverse is true, too…
In one study from the Journal of Psychiatric Research, participants who followed a gut-supportive diet saw significant reductions in depression symptoms in just 3 weeks—without any changes to their medication.
Another study published in Frontiers in Neuroscience found that gut-friendly interventions (like probiotics and prebiotics) not only improved emotional resilience…
But also helped reduce cortisol, the body’s main stress hormone.
Translation?
Your brain is listening to your gut right now. And when you support it—even a little—it responds.
First, you must understand that there isn’t one “magic diet” or “magic pill” that changes everything.
The reality is, your gut is affected by nearly every aspect of your life.
Your habits. Your thoughts. Your environment. Even your relationships.
That’s why Heal Your Gut, Save Your Brain isn’t just a diet book—it’s a daily blueprint.
Inside, I’ll show you how five key pillars are silently shaping your microbiome—and how to shift them in your favor.
Believe it or not, living without a sense of meaning increases gut inflammation and weakens the gut lining.
That’s because a lack of purpose puts the body into a low-grade stress response—flooding it with cortisol, disrupting digestion, and throwing off microbial balance.
I’ll show you how to identify the motivators that keep your nervous system regulated, and how even small shifts in purpose can rebalance your gut-brain axis.
You’ll also learn:
We both know you don’t need another trendy diet. Instead, you need to understand how food shapes your gut—and by extension, your mind. I’ll walk you through how common ingredients (even so-called “health” foods) feed the wrong bacteria, drive neuroinflammation, and throw off critical brain chemicals.
You’ll also learn:
Don’t like intense workouts? Great— you don’t need them! You’ll discover how strategic, intentional movement enhances gut motility, reduces cortisol, and boosts dopamine levels—without needing to hit the gym for hours.
You’ll also learn:
This is potentially the most overlooked aspect of gut health and brain health. The truth is, your relationships are as vital to your gut as your diet. Studies show that social isolation disrupts gut flora and increases disease risk—while meaningful connection boosts resilience, immunity, and emotional health.
You’ll also learn:
Having a spiritual practice—regardless of whether it’s “religious” or not—is actually a powerful biological tool for reducing inflammation, balancing neurotransmitters, and calming the nervous system. Whether it’s prayer, mindfulness, nature, or breathwork, I’ll help you find what works for you. No dogma, no pressure!
You’ll also learn:

“As someone who is getting older, I am more focused than ever on preserving both my cognitive and physical health. *Heal Your Gut, Save Your Brain* by Dr. Partha Nandi provided me with practical, common-sense approaches to achieving a balanced mind, body, and soul.

“My grandma had Alzheimer's and as I age I worried about actions I could take to prevent this from happening to me or my loved ones. This book provides simple and practical steps to help prevent cognitive decline as we age. Easy read for a non medical person but has a lot of great insight. Don't even hesitate to buy this book. Must read for everyone!” - Cheryl H.

“The book highlights the importance of gut health in brain function and offers simple nutritional strategies to reduce inflammation and protect against cognitive decline. I found it both informative and empowering, and I recommend it to any adult, especially those 40 and up, who want to take proactive steps in maintaining their overall well-being.” - Sampson D.

“I read this book in one sitting! Not only does Dr. Nandi explain things so that they are easily understandable, but he offers easy-to-implement suggestions about how to maintain and improve your gut health. I have integrated these into my routine and have experienced dramatic improvements with my digestion. I have recommended this book to everyone I know!” - Mark S.
Right now, thousands of people are using this book to transform their brain health from the inside out.
And to celebrate, I wanted to do something special.
When you claim your copy from this page, you won’t just get the book…
You’ll also get access to my complete Gut-Brain Reset protocol—including the tools, products, and teachings I use with my patients to help them feel sharper, calmer, and more like themselves again.
This 90-day intensive is where the full gut-brain protocol comes to life. Inside, I walk you through my 5-pillar method for preventing (and even reversing) cognitive decline—based on over 25 years of clinical experience and the latest science on the gut-brain axis.
With 7 modules, 7+ hours of video content, and over 30+ downloadable resources, this is the deep-dive trainingI give my private patients—and now it’s yours.
This exclusive masterclass includes:
Start watching today and take action before your book even arrives!
Did you know 1 in 3 people over age 85 now live with Alzheimer’s or dementia?
And that deaths from Alzheimer’s have more than doubled in the last two decades—while deaths from heart disease have gone down?
In this powerful 30-minute session, I’m sharing the critical early warning signs most doctors miss—and why your brain health might already be at risk, even if you feel “fine.”
You’ll also learn what actions to take right now to protect your mind in the years ahead.
You’ll discover:
Hope is a powerful part of healing, and this powerful, full-length documentary reveals the inspiring stories of real people who overcame major health challenges.
From chronic illness and burnout to cognitive decline and autoimmune issues, these “health heroes” overcame these challenges by taking control of their gut and brain health.
These are NOT actors or idealized case studies.
They’re everyday people who refused to accept a life of symptoms, pills, and slow decline—and became their own health heroes instead.
Why you’ll love it:
Even foods labeled “healthy” can contain ingredients that quietly inflame your gut and impair your brain.
This printable guide walks you through 5 everyday compounds linked to brain fog, anxiety, poor digestion, and long-term cognitive decline—plus simple swaps to protect your gut-brain connection.
You’ll discover:
Eating for gut and brain health shouldn’t be confusing—or expensive. This guide cuts through the noise with a clear, practical framework based on my clinical experience and research on the gut-brain axis.
You’ll discover:
This exclusive audio series is designed to regulate your nervous system, lower stress, and bring you back to balance in just a few minutes a day.
Backed by gut-brain science and real-life strategies, these sessions guide you through mindfulness, breathwork, and nervous system resets.
You’ll discover:
MindBiotic is a powerful gut-brain formula combining clinically-studied probiotics, prebiotics, and adaptogens like Ashwagandha.
Designed to support a healthy microbiome, reduce cortisol, and enhance cognitive function, this is my go-to supplement for patients struggling with brain fog, fatigue, or anxious thoughts.
You’ll discover:
Even the best diet can backfire if your body isn’t breaking food down properly.
As enzyme levels decline with age, digestion slows—and that means more bloating, inflammation, and fewer nutrients reaching your brain.
Dr. Nandi’s Digestive Enzymes fill that gap with 18 clinical-strength enzymes designed to extract critical nutrients from every bite.
You’ll discover:
Your gut can’t fuel your brain if it’s not breaking down food properly. This 18-enzyme, plant-based formula helps you digest hard-to-break-down meals—so nutrients get absorbed, not wasted.
Designed to work fast—so your food starts helping your gut-brain axis with your very next bite.
The truth is, your body was never designed to survive this world as it is today.
Tens of thousands of chemicals—over 80,000—have been introduced into our air, food, and water. Most have never been properly tested for long-term safety.
We’re sleeping less, stressing more, and surrounded by ultra-processed foods that hijack our gut and damage the very systems meant to protect our brain.
It’s no wonder rates of Alzheimer’s, anxiety, stroke, and depression are rising fast—many of them linked to inflammation that begins in the gut.
But you can intervene.
This is for you if…
This isn’t about doing everything perfectly.
It’s about knowing what really works—so you can finally take action, protect your brain, and feel better now.

“Could we possibly love Dr Nandi any more? This book is brilliant yet practical. It covers EVERYTHING a busy person needs to change their entire body. The title addresses the gut/brain connections. But this book ALSO addresses community, spirituality, body movement,... It covers all the real-life simple tools to literally CHANGE YOUR LIFE.” - Jo D.

“It seems we know someone navigating cognitive decline and it is hitting close to home for us. This book is offering some insight into why our foods and lifestyles have contributed to mental health problems. Dr Nandi offers realistic and do-able options to help maintain our brain health. He infuses stories along with the science to help break up the jargon. Highly recommend...” - Beth B.

“...This book brilliantly connects the dots between your gut and your gray matter, showing you that the key to sharper thinking and long-term brain health is determined by everything from your next meal and your next hike or yoga class to your next conversation with a friend or loved one, even to the way you choose to spend your life’s energy at work. The book is packed with down-to-earth science and real-world advice, it’s like having a doctor, coach, and wellness guru all rolled into one.” - Buddha W.
If you don’t see and feel a difference in 30 days, simply email our team at support@askdrnandi.com for a full refund. No questions asked!
That’s how confident we are that MindBiotic will transform your gut and brain health just like it has for thousands of other people.
We believe that when you get health, you should give health back. We’re proud to donate a percentage of all sales to charities that are working tirelessly to help the homeless and ending food scarcity.
They are making the world a happier, healthier and more loving place—and with your purchase of any package, you get to be part of that mission, too!
Save over 66% off retail and get 6 powerful tools to support your brain!
Partha Nandi M.D., F.A.C.P. is the creator and host of the internationally syndicated medical lifestyle television show, Ask Dr. Nandi.
A practicing physician and a renowned international speaker, his appearances include TEDx, college commencements, numerous charity functions, premier medical meetings such as Digestive Disease Week, and nationally syndicated television programs such as The Katie Couric Show.
Dr. Nandi has partnered with the Ministry of Health in multiple countries, including Jamaica and India, and has collaborated with The World Health Organization in multiple areas throughout the globe, Dr. Nandi delivers passionate and inspiring talks to diverse audiences.
He continues to travel internationally for conferences and symposia, meeting with global health leaders on his quest to improve health care quality, access, and to empower people across the world “To Be Your Own Health Hero.”
Most programs treat the brain and gut separately. This protocol connects the two with the latest science on the gut-brain axis—showing you how to target the root cause of brain fog, anxiety, memory loss, and even neurodegeneration through the gut
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
Privacy Policy | Terms of Service