Read time: 15 minutes


Our Diets Have Shifted
Grains & Carbohydrates are causing many brain issues

Control Blood Sugar
Grains and carbs are harmful because they spike your blood sugar

Gluten Has Damaging Effects To The Brain
Gluten affects both intestinal health AND neurological wellness

Change Your Energy Sources
Shift your body’s metabolism from relying on carbs to relying on fat and protein

4 Week Action Plan
Integrate the main concepts into your life

“A #1 New York Times bestseller–the devastating truth about the effects of wheat, sugar, and carbs on the brain, with a 4-week plan to achieve optimum health.

Renowned neurologist David Perlmutter, MD, blows the lid off a topic that’s been buried in medical literature for far too long: carbs are destroying your brain. And not just unhealthy carbs, but even healthy ones like whole grains can cause dementia, ADHD, anxiety, chronic headaches, depression, and much more. Dr. Perlmutter explains what happens when the brain encounters common ingredients in your daily bread and fruit bowls, why your brain thrives on fat and cholesterol, and how you can spur the growth of new brain cells at any age. He offers an in-depth look at how we can take control of our “smart genes” through specific dietary choices and lifestyle habits, demonstrating how to remedy our most feared maladies without drugs. With a revolutionary 4-week plan, GRAIN BRAIN teaches us how we can reprogram our genetic destiny for the better.

GRAIN BRAIN is a #1 New York Times bestseller and a finalist for a 2013 Books for a Better Life award.” 

~ David Perlmutter, M.D. from Grain Brain

This book is really good.

It has a number of research findings that show the damaging effects that grains and carbohydrates, have on our body AND on our brain.  It’s amazing how our diets have shifted and what impacts our new diet trends have on our health.

I’ve personally integrated many of his concepts from this book and have noticeable gains ranging from mental clarity to body composition.

I recommend you educate yourself on the concepts that Dr. David Perlmutter mentions in the book and see if they are beneficial in your health.

Let’s explore some of the key concepts!



“I believe that the shift in our diet that has occurred over the past century – tom high-fat, low-carb to today’s low-fat, high-carb diet, fundamentally consisting of grains and other damaging carbohydrates-is the origin of many of our modern scourges linked to the brain, including chronic headaches, insomnia, anxiety, depression, epilepsy, movement disorders, schizophrenia, attention deficit hyperactivity disorder (ADHD), and those senior moments that quite likely hear old serious cognitive decline and full-blown, irreversible, untreatable, and incurable brain disease.  I’ll reveal to you the profound effect that grains could be having on your brain right now without your even sensing it.”

Powerful stuff.

Carbohydrates, sugar, and grains are all around us.  What you’re eating could be damaging your body AND your brain.

Without you even knowing about it!

“Many farmers fatten animals with carbohydrates like corn and grain, not fats and proteins.  You can see the difference by comparing grain fed New York strip steak and grass-fed one.  The grain fed cut will contain a lot more fat.  Partly explaining why a low-carbohydrate diet is weight loss.”

Amazing that a lot of our farmers are feeding their animals all this corn and soy beans, instead of them being grass-fed, as they were in the past.

Are you shifting along with how animals are fed, or eating grass-fed meat?


“One of the reasons why grains and carbs can be so harmful is that they raise the blood sugar.  Other foods like meat, fish, poultry, and vegetables do not.  High blood sugar produces high insulin, which is release by the pancreas to move sugar into the body’s cells.  As insulin increases, cells become less sensitive to the insulin signal.  The pancreas then works overtime to maintain a normal blood sugar.”

You know the feeling, you eat a big plate of pasta and afterwards…you can’t move! You feel lazy and lethargic.  What happens is that your body’s blood sugar levels have skyrocketed, and your body’s organs are going into high drive trying to normalize the sugar.

And then you crash… and you’re sleepy and tired.  It’s vicious cycle!

“The culprits when it comes to decreased brain function are foods that are high on the glycemic index – basically high in carbohydrate.”

The key is to avoid foods that spike your blood sugar levels (foods that have a high Glycemic Index).


“The more sugars we eat, the more we tell our bodies to transfer them to fat. The carbs that trigger the biggest surge in blood sugar are typically the most fattening.” 

To minimize your body fat, minimize the carbohydrates and sugar you intake.  Simple, but it’s astounding all the places you’ll find sugar.


“Gluten means “glue” in Latin.  It acts as an adhesive material holding flour, bread, crackers, baked goods, and pizza dough.”

“This is your brain on gluten: Digestion yields morphine-like compounds that bind to the brains opiate receptors.  It induces a form of a reward, a mild euphoria.  When the effect is blocked or no exorphin-yielding foods are consumed, some people experiences a distinctly unpleasant withdrawal.”  

Grain Effects

This is crazy stuff.  Gluten is said to be able to change our biochemistry including our brain’s pleasure and addictive functions!

Can you now see why food manufacturers try to pack as much gluten into their products as possible?! 

It’s sickening to know that food companies go to these lengths for profit and greed!

“Gluten not just impacts gluten insensitive people, as many as 40% can’t process gluten, and remaining 60% could be in harm’s way.”

Don’t think you’re ok because you’ve been diagnosed with no gluten sensitivity issues.  Gluten is taking a toll on more people than anticipated, and a lot of the times its neurological…so we can’t measure the effects until many years down the road.

“Watch out for foods marketed ‘gluten-free’.  Many have their gluten replace by another ingredient which can raise blood sugar and be equally as bad.”

Just because it says gluten-free doesn’t make it safe.  Remember that if the food spikes our blood sugar levels, then it can be equally as bad as gluten.


“Shift your body’s metabolism from relying on carbs to relying on fat and protein, and you’ll lose weight, gain more energy, sleep better, be more creative and productive, have sharper memory and faster brain, and a better sex life.  Fat – not carbohydrate – is the preferred fuel of human metabolism.  Its only since the advent of agriculture that carbohydrates have become abundant in our food supply.”

Just because we see carbohydrates everywhere doesn’t make them the more energy source.

Dr. David Perlmutter says to switch our energy sources from carbohydrates to fats and protein.

If you want to have optimal brain power, you must get away from a high-carbohydrate, high sugar diet.


At the end of the book, he includes a 4 week program.  The action plan consists of:

  1. Shift your body away from relying on carbs for fuel and add brain-boosting supplements to your daily regimen.

  2. Incorporate a fitness routine into your schedule if you don’t already have one.

  3. Work on getting restful, routine sleep seven days a week.

  4. Establish a new rhythm and maintain healthy habits for life.

Each week is devoted towards each element.  Checkout the book for full description and tons of healthy recipes.

Our HEALTH is number one. We must respect our bodies as high performance Ferrari’s, not as rusty old clunkers.  It’s critical to fuel our bodies with the best nutrition available.

Hope you enjoyed this quick look at a great book.  Here’s to rocking your best version and operating at your highest mental and physical capacity!

David Perlmutter, MD, FACN, ABIHM is a Board-Certified Neurologist and Fellow of the American College of Nutrition who received his M.D. degree from the University of Miami School of Medicine. He is the author of: The Better Brain Book and the #1 New York Times Bestseller, Grain Brain. He is recognized internationally as a leader in the field of nutritional influences in neurological disorders. In 2002 Dr. Perlmutter was the recipient of the Linus Pauling Award for his innovative approaches to neurological disorders and in addition was awarded the Denham Harmon Award for his pioneering work in the application of free radical science to clinical medicine. He is the recipient of the 2006 National Nutritional Foods Association Clinician of the Year Award.

About the Author of “Grain Brain”
David Perlmutter, MD

Written by Michael Carels

Mike's on a mission to master his personal nutrition and health, and is sharing the best information and experiences through this website. Live your legend and inspire others!

Leave A Reply

five × one =