DETROIT (WXYZ) — There’s a new diet creating some buzz called “The Carnivore Diet.”

Well, it’s “new” in the sense that it hasn’t been the norm for a while.

Early humans started eating this way some 2.6 million years ago.

I spoke one-on-one with a doctor who raves about what is now considered a radical diet.

Paul Saladino, M.D. has been on the Carnivore Diet for two years.

“If you can hunt it, that’s an animal food,” said Paul Saladino, M.D.

He explains that the diet consists of eating only animals – no plants.

Basically, it’s nose-to-tail eating – which includes plenty of organ meats (liver, kidney, heart, etc).

And he makes sure his meat is well-raised – grass-fed or wild caught.

Saladino spoke with me via Skype from his home in the Los Angeles area.

He just released a new book called The Carnivore Code.

Dr. Saladino said he's in the best shape of his life thanks in large part to the change in diet.

“I’ve been eating a full carnivorous diet for about two years now,” he explained. “As you can see from the photos, I’m not dying. I don’t have major medical problems. I’m basically thriving on this diet.”

A few years ago he was on the Paleo diet. But he was still dealing with a problem he thought his diet could eventually clear up – eczema.

He started looking into plants that contain toxins and slowly started eliminating them from his diet (like kale, spinach, broccoli, and seeds).

Leafy greens are on display at a grocery store.

“I pulled out high-oxalate foods. Then I pulled out high histamine foods. Then I pulled out high-salicylate-containing foods. And then I pulled out lectin-containing foods. Pretty soon I really wasn’t eating many plant foods, and my eczema got better and better. And then when I cut out all the plant foods, it completely resolved,” Saladino explained.

He then set out to research everything he could about eating only animal foods.

His book walks you through the science and outlines five phases or tiers of the program – because let’s face it – not everybody is ready to give up all fruits or vegetables.

Dr. Saladino's book was released in 2020.

Tier One focuses on animal foods plus the least toxic plant foods – like berries, avocados, olives and squash.

Tier Five is how he eats – just two meals a day featuring plenty of grass-fed steak, egg yolks, oysters, organ meats, bone marrow and bone broth.

One of the most well-known people to try the Carnivore Diet is comedian and podcaster Joe Rogan.

"Two weeks in I noticed I felt amazing… and I was shedding weight. I was shedding a lot of weight,” said Rogan during his February 6, 2020 podcast The Joe Rogan Experience.

Rogan did the diet for the month of January 2020. He said he lost 12 pounds in a month – all while having great energy levels and never feeling hungry. He did describe some serious diarrhea at the outset, but he said that cleared up after two weeks on the plan.

Saladino said one of the main benefits of this diet is weight loss, but he claims it can also reverse auto immune conditions and make insulin resistance go away completely.

He cites in his book published case reports of people who have reversed type 2 diabetes, psoriasis, Crohn’s disease, thyroid disease, rheumatoid arthritis, lupus and more.

But critics will argue much more research is needed.

Also, the U.S. government’s recommended Dietary Guidelines for Americans calls for choosing foods from all five food groups: fruits, vegetables, dairy, grains, and proteins.

I had to ask Dr. Saladino about the studies showing red meat consumption may be associated with an increased risk of heart disease and stroke.

He criticized those observational studies as misleading.

“Because what are people eating with their meat generally speaking? Milkshakes, French fries, breads, soda. That’s the heart attack on a plate -- not the meat,” he said.

Dr. Saladino said he is thriving on the Carnivore Diet and hopes more people will start talking about it.

Dr. Saladino also claims the diet reverses heart disease for those who follow it properly, and he says it’s defended in his book.

He understands this diet is a radical concept for many, and he invites critics to read his book.

He welcomes dialogue about it because he truly believes this way of eating can lead to optimal health.

