Dear Dr. Davis

The Discerning Brute is excited to welcome Dr. Garth Davis as our medical expert who can answer some serious questions. Dr. Davis is medical director of the Davis Clinic at the Methodist Hospital in Houston, Texas, and starred on the hit TLC show Big Medicine. He is also the author of “Proteinaholic: How Our Obsession with Meat Is Killing Us and What We Can Do About It


Today, a letter came from Alex:

I was wondering if you could help me. I have been vegetarian for close to 11 years, 5 of those vegan. I have huge cravings for red meat. Something that I have never had before in my life ( I never really liked the taste even as an omnivore). I take my b12 and my d as recommended and eat plenty of greens with Vitamin c for iron. I take adequate calories and plenty of all variety of whole foods. I am male. Doctors say my blood work is perfect, but I feel very tired all the time regardless of a pretty low stress life and believe I might have adrenal fatigue. I do not drink coffee or tea. Never liked the taste. Anyway, any help would be appreciated.


Hey Alex,

Funny thing happens when people go vegan.  They get bombarded with a lot of nonsense that can create a nocebo effect, similar to placebo, but negative.

So, people say to you over and over that being vegan is bad for you and will make you weak, and guess what, you feel weak.  Similarly, people tend to blame every possible symptom on the vegan diet.  I had a patient who was hypothyroid and her doctor said it was because of her vegan diet.  Understand how ludicrous this is.  What does the doctor tell all his meat eating patients who are hypothyroid?  There hypothyroidism’s genetic but the vegan’s is because of diet?  Turns out that actual research shows vegan have much lower rates of hypothyroidism.

That is not to say that you may not be low in certain nutrients.  Certainly you need a B12 test and an MMA test is actually more accurate than a B12.  If you need to supplement B12, it is so easy and cheap.  I would also check vitamin D.  I do supplement my patients with vitamin D to get above 50.  I also highly suggest getting 10-15minutes of sun daily, or as often as possible.

Fruits are often avoided by people for some mistaken brief they can make you fat, which is ridiculous.  Fruits are great source of energy.  Apples have quercitin which is great for energy.  I know many people who swear by adding Macca to there smoothies for energy.

Sleep is another area that you really have to look at.  Circadian rhythm is vital to health and energy.  You may want to be checked for sleep apnea.  Make sure you are following good sleep hygiene, and DO NOT use your phone at night in bed!

Finally,  people are working out too hard.  Over training is a real problem.  People don’t realize that growth happens when the body is allowed to recover.  Make sure you are alternating high intensity days with low intensity days and taking days off when necessary.


Pick a Phobia, any Phobia!

By Sid Garza-Hillman


A few weeks ago I had the pleasure of meeting The Discerning Brute/Joshua Katcher in person. He had been a guest (via Skype) on my podcast only weeks prior, and just by chance was able to come up to the Stanford Inn during a trip to Northern California. I head up the Stanford Inn’s Wellness Center and am the Nutritionist/Health Coach there.

Joshua, his partner James, and I sat down for dinner, and while we talked about many things (fashion included, though why anyone would wear anything other than rolled up 501’s and white t-shirts is beyond me. Maybe I should be more discerning.), the subject of protein came up. Not because any of us—all plant-based—were concerned with protein in the least, but because working at a vegan resort whose clientele are overwhelmingly NOT vegan, I am constantly asked the big protein question—where do vegans get their protein?


A couple times a week I hang out and walk through the inn’s restaurant and talk to guests. Almost nightly I get the protein question and am there to hopefully dissipate some of the fear around it. I was relating this to Joshua and James and we all decided it should probably be a phobia. And that’s when, through obviously divine inspiration, it hit: PROTEDEFIPHOBIA—the fear of protein deficiency. I think we nailed it, and now just have to figure out the hoops we have to jump through to make it official. Is there a phobia department of the patent office? Should we ‘tm’ it for now (i.e. protedefiphobia™)? Oh, the possibilities. I’m so excited about it that it must be something that deep down I’ve always wanted and finally got: I’m a co-owner of a beautiful baby phobia!


And yet, a reality check. Fear of protein deficiency is very real. As a species we are designed to protect ourselves and to survive the best we can. Often times corporations/companies/industries feed on this instinct in order to drive sales. The animal food industry is no exception. They succeed every time they convince someone that he or she will suffer greatly without intense amounts of animal protein. However, there are a few pesky facts that hurt their bottom line: 1) whole plants are full of protein 2) the human body performs best on a higher carbohydrate diet (not refined/processed carbohydrates, but whole plant ones) and finally, 3) more and more professional athletes are actually performing and recovering better after switching to whole plants. In my practice I devote a substantial amount of time and effort minimizing the fear around protein. But that’s one of the best parts of my job—helping people be LESS afraid. Less fear, more happiness and health. Pretty simple equation.

So, to those with protedefiphobia™, rest assured, help is on the way. It’s located in the produce section of groceries stores around the world.

Protein Obsessed

by Matt Ruscigno, MPH, RD

Protein is one of the most contentious issues of  plant-based diets, from flexitarians to raw vegans.  Much has been written on the subject and one can hardly mention veganism without the topic of protein entering the discussion.  I’ve no doubt added to these discussions over the years. In my professional life I’m often defending the protein-343x300_the-basic-four-food-groupsadequacy of vegan diets and ‘proving’ that it is possible to get all of the amino acids you need from plants. We know amino acids as the building blocks of protein: our bodies require the 9 essential amino acids to perform day-to-day functions in metabolism and muscle development. Protein is a nutrient and by definition a nutrient is a compound that our bodies require to survive. In other words, if we don’t get a nutrient and have a prolonged deficiency, we die. This is serious stuff.

Vegan nutrition expert and Registered Dietitian Jack Norris argues that we may not meet all of the amino acid needs easily and should be concerned about our lysine intake and vegan blogger and author of the Vegan Pregnancy Survival Guide Sayward Rebhal recently wrote about a health issue that may have been related to inadequate protein intake.

So should we be concerned about protein or not? What’s the point here?

The point I’m trying to make is that this obsession over protein is dangerous – because it elevates one nutrient over the others. And there is a historical precedent for this. The first food recommendations in the United States, back when nutrition was a new science and the main function of the USDA was actually agriculture, protein was given superstar status with it’s own group. It makes sense, in some ways, because protein is the basis of all living things and one of the earliest studied nutrients. But over decades as the food square changed to a pyramid and then to a plate, the meat/protein group remains. It’s one of the few nutrients that gets its own group. What about choline? Why doesn’t choline have its own food group? It is a nutrient and as we’ve learned, if you don’t get enough of it you can die! But choline deficiency is extremely rare, you say. Well so is protein deficiency! I want my choline food group!

Wheat Germ has 202 mg Choline per cup. Get that pep, tired husband!

The difference is our national obsession over meat and animal products. We equate eating the flesh of an animal with power. It’s no coincidence that those who question our protein status also question our masculinity as vegans. Because it’s not really about protein, it’s about power and dominance. Protein is a meta-nutrient in that what it means and represents has become more important than what it actually does.

Protein is a meta-nutrient in that what it means and represents has become more important than what it actually does.

Discerning Brute Ed Bauer showing that he not only gets enough protein,

but all nutrients.

This over-concern with protein has penetrated the plant-based movement. In the year 2013 we have a huge number of vegan athletes to point to as examples of how one can get their protein from plants and still kick ass in a variety of disciplines. But have you noticed how many of those vegan athletes either have their own protein powders or are promoting one? If we can get enough protein from plants, why do we need supplements? Is replicating the historical obsessiveness over protein a good idea? Or to constantly feel the need to prove our masculinity? Is this the world we want?

As a nutrition professional, athlete and someone who grew up with punk-rock DIY ethos, I say no, it’s not. With very few exceptions, we can get all of the amino acids we need from eating a variety of plant foods. Not just ‘protein foods’ but whole foods.  Now this isn’t a green light to not think about getting enough protein or how healthy your diet is. I’m just saying that protein isn’t any more important than the other nutrients we need to eat on a daily basis. We need to be conscious of our diets, but this needs to extend beyond protein.

If you’d like to read more about the science of plant protein please see my post on No Meat Athlete or this Vegetarian Resource Group article by Reed Mangels, PhD, RD. if you are interested in learning more about the needs of vegetarian athletes I highly recommend the book Vegetarian Sports Nutrition by Enette Larson-Meyer, PhD, RD or see my documentary series, A Day in the Life of Vegan Athletes.

77 Year Old Vegan Bodybuilder Jim Morris

A World Gym ad which ran in 1990 in all the major bodybuilding magazines. From left to right, Arnold Schwarzenegger, Franco Columbu, Eddie Giulliani, Joe Gold, Bob Paris, Danny Padilla, and Jim Morris.

Jim Morris, the age-defying 77-year old bodybuilder who is still ripped was featured today on the Huffington Post. Morris’ own website says “I decided to become a vegetarian in 1985 at age 50. In 2000 at age 65 I became a vegan.”

According to HuffPo, “Morris ended his 19-year retirement from bodybuilding to compete for the Mr. Olympia title; he won in the over-60 division. Morris now lives in Venice Beach, California and works as a trainer.”

Jim Morris on left circa 1979 & right circa circa 1950’s, The Lon Collection, bottom, circa 2012