Woman who only ate beef for 8 years explains shocking physical and mental impact it had on her

Jordan Peterson's daughter has revealed the impact a strictly carnivorous diet had on her mental and physical wellbeing.

Mikhaila Peterson, of Toronto, Canada, was just 17 years old when she underwent hip and ankle replacement surgery following years of complaints.

The 33-year-old, who is the daughter of media commentator Jordan, appeared on the Joe Rogan podcast eight years ago, where she detailed the issues she was subject to due to autoimmune disorders - including arthritis.

At just two years old, her mom noticed that something was up as she explained how she was told that she 'started walking kind of funny', but a doctor dismissed the concern as 'growing pains'.

By seven she was diagnosed with 'juvenile rheumatoid arthritis', and had 37 joints affected. At 17, Mikhaila had no cartilage left in her hip and ankle.

Mikhaila Peterson, pictured pregnant in March, adopted a strictly carnivorous diet due to autoimmune responses she was having from eating certain foods (Instagram/mikhailapeterson)

With nothing medically working for her, she switched to an elimination diet - where she was able to cut out certain food groups, and from there she discovered that even rice and vegetables wasn't doing her body any favours.

The one thing that was though was beef.

Now, speaking on The Mikhaila Peterson Podcast, which of course she is the host of, she explained to clinical nutritionist Dr Josh Axe exactly that she began eating a beef-only diet in December 2017, and how it has helped her both physically and mentally.

"I started it thinking, I'll do this. I like, I know I don't react to beef. I'll do this for six weeks and reintroduce some foods and see what's bugging me and causing the autoimmune responses," she told her guest.

"And I started with olives, and they were like preservative free - really high quality olives. Just olives had a huge immune response - and it was scary enough that after that, I was like, 'I'm just gonna wait'.

Mikhaila is the daughter of Jordan Peterson (Faith Moran/Getty Images)

"It took about two weeks for the arthritis symptoms to go away. It happened really quickly. It took about six weeks for me to stop crying in the morning because I was very depressed. I was off of antidepressants, but I was still not stable."

She continued: "And then five months later, my lingering anxiety went away, and since then, it's been me spending the last eight years trying to figure out why my body reacts to everything but beef.

"But I've popularized the lion diet because there seems to be thousands, tens of thousands of people with autoimmunity or psychiatric disorders that will go into remission only eating meat, which is nuts.

"Some of those people managed to bring food back and identify exactly what's causing it, but a lot of those really chronically ill people are stuck only eating meat happy because they're in remission."

Mikhaila's only incorporated the strict diet due to what she has described as likely an 'extreme gut permeability, leading to food sensitivities, leading to autoimmunity and psychiatric disorders'.

"So it's been a wild ride," she added.