L. Amber O'Hearn

Amber O'Hearn is a fascinating figure in the field of health and nutrition, known for her profound and bold hypotheses about the human diet, with a particular focus on the carnivorous diet, which consists exclusively of animal products. It is safe to say that she is a key figure in the creation of the rapidly growing movement.

Her work has challenged established views on nutrition and created debate among both researchers and health enthusiasts.

O'Hearn's background in computer science and informatics, as well as mathematics, gives her a unique approach to health issues. Her analytical thinking, coupled with a strong interest in biology and biochemistry, has led her to explore how different dietary patterns affect health in both the short and long term.

She has been a leading spokesperson for the idea that humans can thrive on a diet strictly based on meat, fat, and animal products, with minimal or no intake of plant-based foods.

Over the years, O'Hearn has used her own life as an experiment, and she has reported significant health benefits from adopting a ketogenic, meat-based diet.

This has included improved mental clarity, energy and general well-being, as well as an improvement in several chronic health problems that had previously plagued her.

Her hypotheses have gained attention not only because of her strong opinions, but also because of her ability to dismantle old dogmas with the help of her exceptionally analytical brain, and her ability to draw logical conclusions that are difficult to dispute.

Amber O'Hearn was the driving force behind Carnivory Con, a major gathering of scientists, health experts, and carnivore enthusiasts. Held in Boulder, Colorado, the conference was the first of its kind dedicated to a 100% animal-based way of eating (WOE).

Carnivory Con brought together a number of leading voices in nutrition, metabolic health, and evolutionary biology, including people like Dr. Shawn Baker, Dr. Georgia Ede, and other prominent advocates of the carnivore lifestyle.

O'Hearn herself contributed with in-depth lectures, where she talked about, among other things, human evolutionary adaptation to a meat-based diet, as well as the biochemical mechanisms behind why a carbohydrate-free lifestyle can be beneficial for both physical and mental health.

The conference was a milestone in establishing Carnivore as more than just an “internet community.” It brought together professionals, researchers, and experienced practitioners to discuss the scientific foundations, anecdotal experiences, and physiological benefits of basing one’s diet on animal products.

O'Hearn played a pivotal role in making this happen, and her work has helped legitimize carnivory as a serious nutritional approach, not just a niche phenomenon.

Amber O'Hearn's thoughts on vitamin C and human needs when following the carnivore diet are among her most fascinating and bold hypotheses. She has challenged established beliefs about the Recommended Daily Allowance (RDA), the need for ascorbic acid, and how a meat-based diet can reduce the body's need for the vitamin.

Vitamin C, the RDA and the classic misunderstanding

The general recommendation from health authorities is that people need about 60–90 mg of vitamin C per day to avoid scurvy. But O'Hearn points out that these recommendations are based on a high-carb diet—which dramatically increases the need for vitamin C. She raises an important question: What if the RDA for vitamin C is only so high because it's set in a context where people eat a lot of carbohydrates?

Vitamin C and glucose compete for absorption in the body because they use the same transport mechanism (GLUT1). When carbohydrates are eliminated, the need for vitamin C is reduced because less glucose is present to block absorption. This means that even minimal amounts of vitamin C in animal foods can be sufficient.

The discovery: They didn't even test animal food!

One of O'Hearn's most shocking findings was that many food charts of vitamin C content are incomplete and inaccurate. It turned out that scientists never actually tested fresh meat for vitamin C content.

This is because they assumed that only fruits and vegetables contain the vitamin, and they completely overlooked that raw meat, liver and other organic tissue contain small but biologically significant amounts of the vitamin.

She found that healthy, traditional cultures that lived on a purely meat-based diet never developed scurvy, even though they ate no fruits or vegetables. This included the Inuit, who lived on fresh fish, seals, and reindeer, and the Steppe people of Central Asia. Modern nutritional science simply had not bothered to test the main sources for those people groups that had lived without scurvy for thousands of years.

Uric Acid: The Body's Backup Mechanism?

Another exciting aspect of O'Hearn's research is her exploration of uric acid and its potential role as an antioxidant replacement for vitamin C.

• Uric acid is one of the most powerful antioxidants in the body and is found in much higher concentrations in humans than in other animals.
• Some researchers have suggested that humans may have lost the ability to produce vitamin C precisely because we have more uric acid, which covers many of the same functions.
• On a meat-rich diet, uric acid may be higher, but this is not necessarily negative – on the contrary, it may be an evolutionary adaptation that means we need less vitamin C than is assumed in a plant-based diet.

O'Hearn has thus raised the question of whether vitamin C deficiency is only a problem in carbohydrate-rich diets, while meat-rich diets may have mechanisms that reduce the need, such as lower glucose competition and increased uric acid.

Photo: L. Amber O'Hearn has personally granted permission for image use on NorwegianCarnivory

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https://www.mostly-fat.com/about

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https://www.researchgate.net/profile/L-Ohearn

https://www.goodreads.com/book/show/57026022-the-facultative-carnivore