In Episode 100 of the Life Possible Podcast, Dr. John Barnes sits down with endocrinologist Dr. Mariela Glandt, founder of OwnaHealth, to challenge one of the most entrenched beliefs in modern medicine:

Is Type 2 Diabetes really chronic and progressive… or is it reversible?

Dr. Glandt shares her journey from traditional endocrinology training at Columbia, and Harvard to discovering a radically different approach after hearing the late Dr. Sarah Hallberg speak about diabetes reversal through carbohydrate restriction.

In this powerful milestone episode, we discuss:

· What is actually happening in the body when someone develops Type 2 Diabetes

· Why T2D is fundamentally an insulin problem — not just a blood sugar problem

· The truth about pre-diabetes (including alarming statistics in adults and adolescents)

· What insulin resistance really is — and the signs you may be missing

· Why the medical system labels T2D “chronic and progressive”

· Medication escalation vs. lifestyle intervention

· The role of ketogenic and low-carb nutrition in reversing insulin resistance

· The emotional transformation when patients realize they can take control

If you or someone you love has been told that Type 2 Diabetes will only get worse, this episode offers clarity, science, and hope.

In this episode of The Life Possible Podcast, host John Barnes is joined once again by registered dietitian Shannon Davis, RD for a timely and eye-opening conversation about the new food pyramid—and why it’s been turned upside down.

For decades, we were taught to build our diets on grains, fear fat, and treat protein as an afterthought. But metabolic science has been quietly rewriting that story—and now, even the pyramid is catching up.

In this conversation, John and Shannon break down:

· Why the original food pyramid failed so many people

· What it really means that protein is now at the base

· The essential role of protein and healthy fats in human nutrition

· Why there is no such thing as an “essential carbohydrate”

· How insulin, hormones, and food quality matter more than calories

· What this shift means for everyday people trying to lose weight, regain energy, and improve metabolic health

They also revisit key themes from Shannon’s first appearance on the show—exploring how dietitians are evolving, why many professionals are finally stepping outside the old paradigm, and how this new model validates what low-carb, protein-forward approaches have shown for years.

If you’ve ever felt confused, hungry, or frustrated by traditional nutrition advice, this episode will help you understand why it wasn’t your fault—and what to focus on instead.

👉 If the food pyramid flipped… maybe it’s time to flip how you eat.

In this episode, Dr. John Barnes welcomes Lindsay Venn, PA-C, RD, MPH—a clinician with rare dual training in medicine and nutrition, and a founding member of the Society of Metabolic Health Practitioners. Lindsay shares her journey into integrative, root-cause metabolic care and the mission behind Venn Integrative Medicine, her multi-state telehealth practice.

Together, John and Lindsay unpack the science and real-world implications of insulin resistance—what it is, why it’s so widespread, and how it drives a long list of symptoms and chronic conditions. Lindsay explains how IR develops, why it’s often not your fault, and how conventional dietary guidelines contributed to the modern metabolic crisis.

They also explore why insulin resistance shows up differently in women’s health, influencing everything from PCOS and fertility to the hormonal transitions of perimenopause and menopause. Lindsay breaks down the key labs and biomarkers she evaluates in clinical practice (A1C, fasting insulin, glucose patterns, hormone profiles) and why fasting glucose alone is not enough to assess metabolic health.

The episode wraps with a grounded discussion of GLP-1 medications—their potential role, their limitations and concerns, and how people can boost their own GLP-1 production naturally with low-carb/keto nutrition, specific supplements, and lifestyle strategies.

If you want a clear, compassionate, clinically grounded explanation of insulin resistance—and why women are uniquely affected—this is an episode you won’t want to miss.