Challenge

Start the new year with a 21-day challenge to set yourself up for optimal health and well-being in the coming year and beyond.

Join The Waitlist

21 Days to Empower Your Gut in 2024 & Beyond

Learn Evidence-Based Tactics to Support Optimal Gut Health

Everything you will learn is supported by research and based on the most current information. No need to visit Dr. Google because I’m delivering the truth, and nothing but the truth to guide you!

Build a Foundation to Support Healthy Habits

Strong houses are built on solid foundations. Think of your habits as the keys to changing your life. I’m sharing the most effective actions that’ll build healthy habits that stick. You’ll feel a difference in your body within the first week.

Understand the Connection Between Gut Health and Happiness

If there’s one thing we know it’s that a happy and healthy gut directly supports a happy and healthy mind. You’ll learn how to get your gut in check and experience all the joyful side effects.

Eat Delicious Foods that Delight Your Mind & Body

Be prepared to have your taste buds blown away with 15 recipes you won’t find anywhere else. You’ll be craving these gut healthy super stars every day. I’ll even simplify your grocery store runs with weekly shopping lists.

Have FUN Getting Healthy

No one ever sticks with something they don’t enjoy. That’s why having fun is built into every day and lesson of the challenge. Get healthy, rack up points (yes, there’ll be points!), and celebrate the wins Dr. B style!

Feel GOOD!

Bottom line, folks, there’s nothing better than feeling good. And when you treat your mind, body, and microbiome well, you’ll have more energy, boost your brain power, and be excited to take on the day.

Your New Year’s Revolution, NOT Resolution

Here’s the deal: I know it’s not a novel concept to start a challenge on the first day of the year.
In fact, I bet you’re comparing my challenge to 7 different other programs and diets right this minute. I get it! You likely wouldn’t be surprised by how many of my patients tell me they’re holding out for January 1st to launch full force into their health goals.
There’s a reason challenges are so popular around this time — there’s a unique form of motivation that comes at the start of a new year, when you feel like you have a fresh slate.
Whether it’s keto, paleo, Whole30, WW (formerly known as Weight Watchers), or targeting calories, carbs, macros, or the Peanut Butter Diet (yes, that’s a thing) – people approach the beginning of the new year as THE time to upend their health habits for the better. But holy rules to follow, Batman!
When you choose your diet based on what you’re told to remove and restrict, your relationship with food suffers and your understanding of what’s healthy becomes severely skewed.
The diets listed above are not only restrictive, they all fail to focus on what’s truly important: YOUR GUT. Yes, a couple of them might claim gut healing as a side-benefit, but they simply don’t have the science to back it up.
That’s where I come in, and that’s what Microbiome 21 is about at its core. Because your gut microbiome is the core of your health. These 21 days are not just about shedding some pounds and collecting a badge of endurance. This challenge is about gaining energy, long term vitality, learning habits you can actually stick with, and understanding that the health of every system in your body starts in the gut.

If you know anything about me, it’s that I come with receipts – AKA science-backed research. There is nothing anecdotal in Microbiome 21. Each day of this challenge, every habit I will teach you, and all of the knowledge you will gain is all based on nutritional science.
It’s time to show New Year’s resolutions the door, and usher in the New Year’s revolution.

Microbiome 21 isn’t about what you have to take away. It’s a science-backed, evidence-based approach to optimal health — and frankly, if I do say so myself, it’s a heck of a lot of fun. Most importantly, this isn’t a 21-days-and-you’re-done kinda deal. Unlike some of the most popular diets and New Year’s resolutions, Microbiome 21 will demonstrate exactly how to establish habits and set a foundation for lasting health.

(Plus, you’ll track your experience from the beginning and when you start seeing positive changes — I’m talking within the first week — that’s when the real fun begins.)

Once you go through Microbiome 21, it’ll be there for you to return to if you ever need it. But if I’ve done my job right, you’ll never again need to start from scratch to get yourself back on track.

Maybe it’s been a long time coming, maybe you’ve been inspired by recent world events, or maybe you’re just ready to let science lead the way — any way you swing it, the time for your personal health revolution is NOW.

“But, Dr. B…”

“I’m not sure why you’re the one to help me make a change.”

That’s fair, because at the end of this, it’s you who’s got to make the change. Here’s where I come in: I’m a board-certified, award-winning gastroenterologist. I’ve written two New York Times bestselling books that demonstrate exactly how turbocharging your gut is the foundation for lifelong health. Plus, I’m a reformed junk-food junkie and this is the challenge I would take if I were starting my journey over again.

“I have a slew of gut health issues I’m dealing with right now, is it the right time for me to start your challenge?”

The answer is simple: Yes! This challenge isn’t a medical protocol or a meal plan. The fact is, there are few conditions that aren’t aided by healthier habits, and some of the concepts we’ll be working with here will actually help you get to the root of your gut issues and maybe even identify what your next best steps should be.

“I’ve tried to instill healthy habits every year and nothing has worked. This won’t be different.”

I developed Microbiome 21 as a tried and true (science-backed…and fun!) way to help people make needed changes in their approach to health. Habits at their core are about informed action. I plan to make it easier than ever before to make healthy habits part of your routine so your routine promotes health.

“I’m not vegan. In fact, I really love meat and will never give it up.”

Good news – you don’t have to! Microbiome 21 isn’t about taking away. It’s about adding in. While I do not personally eat meat and you do not need meat to support a healthy diet, you’ll still love this challenge even if you’re not vegan or vegetarian. You can include meat with the recipes I’ll give you in this challenge, but I bet you’re going to love them all on their own.

“I don’t think substantial change can be made in 21 days.”

When it comes to gut health, change happens fast even if you don’t realize it. A 2013 study in Nature by Lawrence A. David found that changes start to occur in the microbiome just 24 hours after making a dietary change. In 5 days there can be a dramatic shift. And in just 14 days, you can alter functional output.

“Shouldn’t I be looking for a program that’s specific to my health goals?”

Microbiome 21 will teach you how to set a foundation for optimal health. The more you understand how your gut connects to every system in your body, the better you’ll understand how to reach your personal goals — whether they be healing, refining, or restoring.

“I feel pretty good. Is this right for me?”

That’s great, I love to hear it! I still say yes, this is right for you, because this challenge is about empowering you with knowledge and delicious foods — who wouldn’t benefit from that?! People who took the challenge last year had all different circumstances, including being healthy as a horse, and they said they still learned new things to make choosing healthier actions easier.

Join The Waitlist

21 Days to Empower Your Gut in 2024 & Beyond

Optimize Your Gut Health

This is the key to boosting our metabolism, balancing our hormones, and taming the inflammation that causes a host of diseases. Most importantly, it’s the key to feeling GOOD.

Establish Lasting Healthy Habits

It is healthy habits that allow us to just live our routine lives and yet be promoting health and fitness. When positive habits form, effortless fitness ensues.

Learn Exactly How to Become the Healthiest Version of You

When complex science becomes easy-to-digest, knowing how to achieve optimal health becomes accessible and understandable.

Revolutionize The Way You Think About Nutrition

What you eat and how you think about food is about to get the engaging, evidence-based treatment. You’ll never consider a fad diet again once you know how to think about nutrition!

Reset, Restore, and Revitalize!

You’ll come through this challenge feeling like a more energetic, confident, well-informed, and happy YOU! Remember, it’s not about resolutions, it’s about your revolution.

Change is Possible in 21 Days

“My husband and I started 2022 the best possible way by signing up for Dr. B’s 21-Day Microbiome 21 Challenge. We’ve been vegan for five years and WFPB for the past 2 ½, but after spending so much time in lockdown, we really felt we had let things slip. The booze was back, hash browns were a regular for breakfast and we were eating a lot more processed foods and oils than we had in a good while.

In short, we felt like crap.

Three weeks later, things couldn’t be more different.

No alcohol, no fizzy drinks, no processed foods. Our energy levels have gone through the roof, so has our motivation and mindset is so much more relaxed and positive.

I feel like a whole new person! I learned SO much – such as immune conditions like fibromyalgia and coeliac disease start in your GUT – and it has given me so much hope and control in recovering both from fibro AND myocarditis. We average between 35-45 plants a day and will never go back to any other way of eating.

Everything we have learned and implemented has set us up for life.

I have learned more about nutrition and what causes and heals disease in three weeks than I did in my entire Cornell Plant Based Nutrition course!”

— JACKIE

KAREN

The challenge was worthwhile and helpful even though I’ve been plant-based for 20+ years.

CLARE

I just finished watching the Day 4 video and it definitely hit home! It has never once occurred to me that such things can have that effect on our guts!

MARIE

I’m back on track and I love it. I do feel so much better and having accountability helps to stay on track!

RESET YOUR GUT, RESTORE YOUR HEALTH, AND REVITALIZE YOUR ROUTINE WITH…

$37

  • Start 2024 with guidance, support, and a plan
  • Science-backed, evidence-based, and FUN challenges to establish lasting gut health, delivered daily to your inbox and your member portal
  • Recipes you won’t find anywhere else, guaranteed to blow your taste buds away
  • Exclusive prep lessons to set you up for the best start to the challeng
  • Gain empowerment, support, and get your questions answered in the members-only Dr. B’s Microbiome 21 Community hosted within Kajabi
  • Return to Microbiome 21 whenever you need to reset or boost your commitment with lifetime access to the lessons and exercises
  • LIVE Training + Q&A on January 21 on keeping up your momentum and furthering your personal health goals

Hey! I’m Dr. Will Bulsiewicz, MD MSCI

(PRONOUNCED BULL-SUH-WITS)-BUT YOU CAN JUST CALL ME DR. B.

You may know me as @TheGutHealthMD. I’m the New York Times bestselling author of the Fiber Fueled and The Fiber Fueled Cookbook, an award-winning gastroenterologist, and an internationally recognized gut health expert.

I’ve dedicated my life to learning how to heal the gut from the inside out.

I completed a bachelor’s degree from Vanderbilt University, an MD from Georgetown University, and a master’s in clinical investigation from Northwestern University.

I was also the chief medical resident at Northwestern and the chief gastroenterology fellow at UNC, and I received the highest award given by both my residency and fellowship.

I created this challenge so that you can begin 2023 with guidance, support, and a plan for optimal health and overall well-being.

Frequently Asked Questions

Are labs and supplements included in the program?
No. Everyone has a different combination of causes, which means that the supplements & labs they need are going to be different.
How much should I budget for labs and supplements?
We recommend that you budget an average of $500 per month (range $200-600/per month) for supplements and labs. A lot of it depends on where you are in the program.
Do you take insurance for payment?
No, unfortunately insurance does not compensate us for the work we do.
Will your program work for me even if I'm not in the United States?
Yes! In addition to our store in the United States, we also have supplement and laboratory stores in the United Kingdom, European Union, and New Zealand.
Why don't you prescribe medications anymore? You're an MD, correct?
Yes, I am an MD, but in order to help people across state and national lines I have chosen to operate as a health coach. So you’re able to get all of my functional, homeopathy, nutrition lifestyle, and kidney medicine MD knowledge even when we live in different states (and countries). I also found that there is a natural option for everything and consequently I don’t need to prescribe medications anymore.
Why are all of your visits online over video conferencing (zoom) and the internet?
In order to fulfill my purpose of helping more than a million people improve their kidney health worldwide, I have to be able to help people across the world over the internet. Working online, I can also work from home and be there more for my family.
Is the program interactive and can I ask Bismah questions?
Yes, the program is very interactive. You get 1-on-1 calls, group calls, and access to the the community where Bismah and her health coaches answer your questions directly within 2 business days.
Your program definitely looks like it has helped lots of people, so why haven't other doctors heard of it?
Unfortunately, conventional doctors learn very little about functional, root cause medicine, nutrition in medical school, and many of the main causes of kidney disease are related to heavy metals, chemicals, molds, and infections. Natural and functional medicine doctors are great but are usually generalists who are focused on other illnesses and are not aware of all of the causes of Kidney disease. I have this knowledge because I have done additional training in kidney medicine and natural holistic methods. I have also focused on learning about every potential cause of kidney disease and how to resolve it.
Why are your prices so high?
Our prices may seem high, but when compared with other functional medicine providers, you will find that they are very reasonable. And we have the additional specialization, experience and training to help you find and address all of your causes of kidney related diseases.

Whenever you look at the pricing of a program, you want to look at whether the outcome you are going to achieve is worth the investment.

When you choose to work with us, you’re making an investment in your health. An investment that pays you back because when you optimize your health, you will be able to do things in your life that you weren’t able to do before. Perhaps you will have the energy to do better at work, have more fun with your family, be able to travel or maybe we decrease your risk for a heart attack or stoke and you’re able to live longer.

Do I still need a primary care provider when I work with you?
Absolutely. I operate as a coach in the online environment and dont practice primary care.