Stephen Phinney, MD, PhD

All posts by Stephen Phinney, MD, PhD

Nutritional Ketosis, Treating Type 2 Diabetes and More—A Q&A with Dr. Stephen Phinney

Is type 2 diabetes reversible? Is intermittent fasting good for you or dangerous? Is nutritional ketosis possible for vegetarians? Virta co-founder and Chief Medical Officer Dr. Stephen Phinney answers these questions and a lot more in this Q&A.

/ January 11, 2018

Sodium, Nutritional Ketosis, and Adrenal Function

If we can believe what we read on the internet, ‘adrenal fatigue’ is a common problem associated with low carbohydrate, paleo, and ketogenic diets. Typical symptoms attributed to diet-induced adrenal failure are fatigue, insomnia, anxiety, and slow recovery after exercise....

To Fast or Not to Fast: What Are the Risks of Fasting?

Fasting in various forms is getting a lot of media attention.  Its advocates, with varying degrees of expertise and medical training, claim that it is an easy way to speed weight loss and get into ketosis, and that it is...

Paleo vs. Keto: What’s the Difference?

People may assume all low carb diets are equal in their nutrient contents and physiological benefits. This is far from the truth, and the resulting confusion has distracted us from fully understanding how best to apply carbohydrate-restriction to improve individual...

Reversing Type 2 Diabetes with Nutritional Ketosis

Admittedly, reversing diabetes is a rather bold goal. By way of contrast, the American Diabetes Association defines type 2 diabetes as a progressive disease whose course at best can be slowed by lifestyle change and medication. Based upon solid science—some...

Increased Longevity —A Credible Benefit of Nutritional Ketosis?

There has been a consistent line of research over the last few decades linking long-term energy-restricted (i.e., calorie-restricted) diets to increased longevity in animal models like fruit flies, worms, and mice, but longer term studies in monkeys have yielded mixed...

The Sad Saga of Saturated Fat

The key question here is, “what’s the precise relationship between dietary saturated fat and blood levels of saturated fat?” For people who still believe you are what you eat, the answer is easy. And it follows from that easy answer...

Does Your Thyroid Need Dietary Carbohydrates?

Thyroid hormones have an important role in regulating metabolic rate, and that’s why they have emerged front and center as a common concern associated with nutritional ketosis. There’s no question that when some people adopt a low-carbohydrate lifestyle, their thyroid...

/ May 3, 2017