How a Carnivore Diet and Metabolic Health Are Transforming Lives—and Reproductive Outcomes
Dr. Robert Kiltz, founder and director of CNY Fertility, has spent the last 25 years helping thousands of couples conceive—even those who were told it would never happen. Now, at 69 years of age and in peak health and high energy, he’s making waves in the low-carb, keto, and carnivore communities with a message that’s changing lives far beyond fertility.
“I’m 69 years young,” he told me during our recent interview, “and I’ve never felt better in my life. Since age 55, I’ve been living a mostly carnivore lifestyle. Arthritis, psoriasis, kidney stones, migraines, bowel issues, depression—gone.”
At the upcoming 10th Annual San Diego Symposium for Metabolic Health, August 14–17, Dr. Kiltz will share how fertility and metabolic health are deeply intertwined—and how food, not pharmaceuticals, often holds the key.
From Surgery to Steak
Dr. Kiltz began his career as a traditionally trained OB/GYN. “I’m a mechanic at heart,” he said. “I love building things and fixing what’s broken.” After completing a fellowship in reproductive endocrinology and infertility, he launched CNY Fertility in 1997. Today, it’s one of the largest—and most affordable—fertility centers in the U.S., renowned for taking on difficult IVF cases that other clinics turn away.
But despite clinical success, he started noticing patterns that didn’t align with what he’d learned in medical school. “Patients were doing everything right—according to the guidelines—and still not conceiving.” He began listening to those trying unconventional approaches. “Some of my patients were doing Paleo more than 20 years ago and getting pregnant. I thought, ‘What is that? I don’t know what that is.’”
His curiosity led him to try the diet for himself—and the results were undeniable.
The Inflammation-Fertility Link
“In my world,” Dr. Kiltz explained, “inflammation is the cause of disease. And when it comes to fertility, it’s the root problem.” He believes the mainstream dietary prescription—plant protein, low fat, and three to six meals a day—is deeply flawed. “The standard diet was causing disease in me and in my patients.”
He pointed out that common issues like endometriosis, pelvic inflammation, and even polycystic ovarian syndrome may be tied to a high-plant, low-fat diet. “The colon is a big abscess, and for women, the proximity of the colon to the reproductive tract means inflammation and microbes are moving into the pelvis.”
Dr. Kiltz now encourages patients to add more animal fat and eat less frequently. “If you simply eat once a day, focus on animal fat, and remove the plants, you significantly lower inflammation. And when you lower inflammation, you improve fertility.”
He also challenges the popular demonization of fat. He believes animal fat is essential for fertility and overall health—and that most of what people think of as plant fat is actually processed oil. “For the most part, fat in plants comes from industrial extraction. Real, nourishing fat comes from animals.”
Fitness, Faith, and the Ferrari Within
Dr. Kiltz’s own transformation is a compelling part of the story. “I get up at 3 a.m., do 100 push-ups, meditate, read something uplifting, take a hot or cold plunge, and I’m at work by 5 a.m. My energy is amazing.” His daily routine includes light weights, walking, and one meal—often a steak with butter and salt.
For him, keto and carnivore aren’t just about macronutrients. “The mindset is such an important part that I think I’ve gotten to on this lifestyle,” he explained. He sees mental and emotional resilience as crucial components of health and healing.
In his TEDx talk The Human Ferrari, he encourages people to see themselves as high-performance machines. “You wouldn’t put diesel in a Ferrari,” he said during our conversation. “Why are we putting processed carbs and industrial seed oils in the most complex, beautiful machine on Earth—our bodies?”
Why You Should Be in San Diego
Although this will be Dr. Kiltz’s first time presenting at a LowCarbUSA event, he’s no stranger to these communities. “I’ve spoken at many events. These in-person events are where real learning happens.”
He emphasized the value of LowCarbUSA Symposiums and the community that has grown around them.. “Why do you go to church? Or concerts? Or to meet family? Because we’re community-based organisms. Virtual is great, but it’s not the same as being in the room.”
Kiltz encourages people from all walks of life to attend—especially those navigating fertility challenges. “The best place to learn is the LowCarbUSA Symposium in San Diego. You get to talk to the experts, ask questions, and hear the stories that make it real.”
A Fertility-Focused Talk You Can’t Miss
Dr. Kiltz will present on the root causes of infertility and how nutrition and lifestyle changes can transform reproductive health. “I’m going to talk about reproductive healthcare and a new way of looking at healing our problems through a keto carnivore lifestyle.”
He’ll cover conditions like PCOS, irregular cycles, pelvic pain, and endometriosis—exploring their links to inflammation and diet. “It’s not just about sperm and egg. It’s the environment. And that’s something we can change.”
He’s also bringing the stories. “I’ve seen so many people conceive and deliver babies on both keto and carnivore. And stories move people.”
Ready to Be Inspired?
If you or someone you love is facing fertility challenges—or if you want to understand how nutrition and lifestyle shape every system in the body—Dr. Kiltz’s talk is not to be missed.
“You can change your life with what you put on your fork,” he told me. “You can change your health. And you can build the family you’ve dreamed of.”
Join us in San Diego, August 14–17.
Because the story you’ve been waiting for might just begin there.
Register here for the 10th Annual Symposium for Metabolic Health, August 14-17, 2025.
Dr. Robert Kiltz links:
