Eat meat. Not too little. Mostly fat.

Preamble

In 2013, in response to repeated requests, Zooko and I collaborated on a brief guide to getting started on a ketogenic diet. As the primary author and research lead on the Ketogenic Diet for Health website, I had shied away from giving dietary advice, preferring to share only my interpretations of the scientific literature.

In fact, I was so averse to the idea of telling people what to eat, that Zooko penned it essentially single-handedly, while I provided only a few edits, and the title, which I have kept here. I further insisted it not be hosted on that site, which I felt ought to contain only discussion of scientific literature. I am grateful for his willingness to write that piece, because I know his work has helped many people.

I had already been eating a carnivorous diet for four years at that point, and knew that a carnivorous diet appears to work for many people for whom a regular, garden variety, keto diet isn’t enough. In my experience, it is easier to start with a more restricted diet, and if that is successful, to carefully expand the repertoire as tolerated and desired. That way, if problems occur, you always have the option to go back to what worked, while figuring out what to do next. And so, in the tradition of many great low carb authors, (as discussed in this follow-up) our recommendation was not to begin with the kind of low carb diet that many long term keto dieters eventually settle into eating. What we said was:

“Our recommendation is simple: eat nothing but meat for 30 days.”

(Note that by meat, we mean animal sourced foods, not necessarily only steak, though that is an option.)

Indeed, the rest of the article is mostly just affirmation that you read that correctly, a few clarifications, and some pitfalls to avoid. It also contained some general advice pertaining to ketogenic diets.

Because this keto starting guide recommended a completely carnivorous diet, and was one of the first sites that did so, it has become a reference for people beginning a so-called “zero-carb/ZC” diet. As such, it deserved an update more specifically for that. If you are looking for our previous version, which is geared toward using a carnivorous diet to kickstart a ketogenic diet for those new to ketogenic diets, it can now be found here. If you are already familiar with or following a ketogenic diet, and are looking to transition to a carnivorous diet, continue on this page.

Important note: If you are on a prescription drug

A ketogenic diet has a powerful effect on the body and starting one could very rapidly change the effective doses of certain medications. For example, drugs that affect blood pressure or blood sugar could suddenly be in dangerous excess. If you are on a potent drug, it is advisable to get help monitoring your situation while transitioning to a ketogenic diet.

Why would I do this?

We have little to no clinical evidence of benefit from plant free diets [1], and plenty of evidence of benefit from ketogenic diets, so why would anyone already on a ketogenic diet willingly restrict further an already restricted diet?

The answer is that the number and types of anecdotes of clear and significant benefit is too large to ignore. Not only are many people finding impressive positive benefits from a shift to a plant-free diet, but many are experiencing remission of diseases considered progressive and uncurable. Moreover, a carnivorous diet is safe to try. This makes the risk to reward ratio extremely favourable. You might want to try a carnivorous diet if:

• Your weight loss on a ketogenic diet has stalled above your ideal weight.
• You have a digestive problem, such as Crohn’s or colitis.
• You have an autoimmune disorder, such as arthritis, asthma, or connective tissue disease, or a disease suspected to have an autoimmune connection, like MS, migraines, or Lyme disease.
• You have a skin problem such as eczema, psoriasis, or rosacea.
• You have a mood disorder, such as depression, schizophrenia, or bipolar disorder.
• You are just curious and like self-experimentation.

For an interesting collection of anecdotes, including my own, and that of the photographer, Rose Nunez Smith, see Zero Carb Zen.

I’m not claiming that carnivory will cure these diseases, just that many people have had significant remission with it, some even complete remission.

[1]	The only clinic I know of that uses and advocates a meat only diet, is Paleomedicina in Hungary, under the direction of neurobiologist Zsófia Clemens.

How do I start?

I recommend you dive straight in to carnivory cold turkey (or hot beef). If you are going to get benefits, you might as well find out right away. Ultimately, it will save time and agony, and give you more information. Get as many confounds out of the way as you can. The faster you can determine if carnivory is right for you, the faster you can get the benefits and get on with the rest of your life. There are far more interesting things to focus on than what you are having for dinner. One of the great beauties of carnivory is that the process of eating becomes so simple, it opens up time to think about other things.

Carnivory is not typically difficult. What difficulties there are are primarily psychological and social. So you need to commit and prepare. Commit by knowing why you want to try it. That’s what will get you through. Don’t do it if you’re not really sure, because breaking your word to yourself is damaging to self-esteem. For this reason, it helps to make it a short-term commitment; if you end up feeling doubtful you know you can stick to it, because it will be over soon. Prepare by ridding your environment of foods you know are tempting. Have some meals planned and shop ahead. Know what social situations will be scheduled and have a plan for how to respond to tricky ones. More on that below.

Some people like to have a partner in on their plans, for accountability purposes. If you have someone you trust deeply, and that appeals to you, go for it. I am usually in the school of keeping goals private, especially if what you are doing is in any way controversial. First of all, you don’t want to have to deal with other people’s “concern.” Tell people you want to try jumping from an airplane and they’ll nod approvingly. Tell them you want to avoid eating plants for a month, and they’re likely to flip out and try to talk you out of it, or at least demand you defend your choices. When I stopped eating plants, the last thing I wanted to do was tell my friends about it. It’s just not the way I roll. I’d rather pull it out of my pocket after I’ve been doing it awhile— “Oh, by the way…” (I admit that may be a personality quirk. There’s a lot people don’t know about me right off the bat, and that’s how I like it.) Second, I am very uncomfortable when other people ask me how something is going during difficult moments. If I’m struggling with a commitment, it only feels worse to think someone else is invested in it, too. Worse, they might try to solve my problem for me. I like to solve things on my own. Nonetheless, I recognise that many people do better with social support. Internet forums can be very helpful. Even this introvert used them extensively in the beginning. If you already know what style of experimenter you are, stick with that.

How long do I have to do this to know if it’s of benefit?

As before, I recommend a 30-day trial. In truth, there are some people who don’t start to see the benefits until more time has passed. Other carnivory experts recommend a much longer experiment, and have noted that many do not fully adapt to the diet until about 6 months. I do not at all dispute this observation. I simply think that a 6 month commitment is too much to ask of most people. If you are very sick and at your wits end for a solution, you may be willing to give it 6 months, but if you are just curious, just slightly dissatisfied with the status quo, 6 months may seem too intimidating, too big a sacrifice.

Many people experience clear benefits essentially immediately, within a couple of days or a week. After 30 days, many will already have experienced a consistent health improvement from a plant free diet, and they will have gotten through the psychological adjustments necessary to make it practical and sustainable, should they wish to continue. After 30 days, most people are in a good position to know what it takes to implement it, and whether it is worth it. The idea of eating only meat can be extremely intimidating. After 30 days, it is evident how surprisingly easy it is.

What should I actually eat?

Invariably people want to know what to eat, and often ask for recipes. I usually deflect this latter question. The thing is, recipes, in the traditional sense are almost the antithesis of carnivorous eating. Keto needs recipes, because people are trying to make food seem like what it was before keto. They mock up things like pancakes, cookies, pasta, rice. Don’t get me wrong. I spent over a decade on a low carb diet before I started eating this way and I’ve made all manner of low carb desserts and comfort foods. It’s fun. Some of the recipes out there are ingenious, and delicious. No one on a ketogenic diet need ever miss the way they used to eat. This kind of intervention can get you through when you’re feeling deprived, and can make the difference between success and failure. For this experiment, though, you’re going to take a different approach.

To habituate yourself to a carnivorous diet it’s best to forget about trying to imitate other kinds of food. Meat doesn’t need to mask itself to taste fantastic anyway. It’s not as though we’re dealing with tofu. What carnivorous eating asks for is not recipes, but kitchen skills. In my book I will provide as many tips as I can gather for bringing out the best in meat. Here, I’m only going to to tell you what to eat, not how to cook it.

In my experience, people have the best response when they:

1. Focus on “whole” cuts of fresh meat, preferably cooked at home.
2. Stick primarily to fatty cuts. My list below includes some lean choices. If you use them a lot, you may want to supplement butter, tallow, lard, or fish oil. For this trial, do not use vegetable oils, not even coconut oil. Many people are intolerant of it.
3. Avoid seasoning or sauces of any kind, with the possible exception of salt (see the FAQ below).
4. Minimise “processed” meats.
5. Do not let themselves get hungry. Eat as often as you like until you are full. Err on the side of full. You aren’t trying to fool your body, you are trying to feed it.

Staples include the following examples. These reflect my cultural biases living in the U.S.A. Other countries cut differently and have different preferences.

Frequently asked questions

Should I measure ketosis?