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A1C is one of the most commonly used markers for assessing metabolic health, but it’s also one of the most misunderstood. In this episode, I revisit the “Overrated or Underrated” framework to break down what A1C actually measures, where it can be useful, and why it often fails to tell the full story. We explore the many conditions, supplements, medications, and physiological states that can falsely elevate or suppress A1C, leading to flawed conclusions about insulin sensitivity. Topics discussed:
- What A1C measures
- Overrated versus underrated markers
- False A1C elevations
- False A1C reductions
- Anemia and A1C
- Protein intake effects
- Medications and A1C
- Endurance training considerations
- Ethnicity and lab interpretation
- Better insulin sensitivity markers
----------
My Live Program for Coaches: The Functional Nutrition and Metabolism Specialization
www.metabolismschool.com
----------
[Free] Metabolism School 101: The Video Series
http://www.metabolismschool.com/metabolism-101
----------
Subscribe to My Youtube Channel:
https://youtube.com/@sammillerscience?si=s1jcR6Im4GDHbw_1
----------
Grab a Copy of My New Book - Metabolism Made Simple
----------
Stay Connected:
Instagram: @sammillerscience
Youtube: SamMillerScience
Facebook: The Nutrition Coaching Collaborative Community
TikTok: @sammillerscience
----------
“This Podcast is for general informational purposes only and does not constitute the practice of medicine, nursing or other professional health care services, including the giving of medical advice, and no doctor/patient relationship is formed. The use of information on this podcast and the show notes or the reliance on the information provided is to be done at the user's own risk. The content of this podcast is not intended to be a substitute for professional medical advice, diagnosis, or treatment and is for educational purposes only. Always consult your physician before beginning any exercise program and users should not disregard, or delay in obtaining, medical advice for any medical condition they may have and should seek the assistance of their health care professionals for any such conditions. By accessing this Podcast, the listener acknowledges that the entire contents and design of this Podcast, are the property of Oracle Athletic Science LLC, or used by Oracle Athletic Science LLC with permission, and are protected under U.S. and international copyright and trademark laws. Except as otherwise provided herein, users of this Podcast may save and use information contained in the Podcast only for personal or other non-commercial, educational purposes. No other use, including, without limitation, reproduction, retransmission or editing, of this Podcast may be made without the prior written permission of Oracle Athletic Science LLC, which may be requested by contacting the Oracle Athletic Science LLC by email at operations@sammillerscience.com. By accessing this Podcast, the listener acknowledges that Oracle Athletic Science LLC makes no warranty, guarantee, or representation as to the accuracy or sufficiency of the information featured in this Podcast."
Poor sleep isn’t always a discipline or routine problem — sometimes it’s a digestion problem hiding in plain sight. This episode explores the emerging evidence linking gut dysbiosis with sleep quality, including research showing a bidirectional relationship between insomnia and the microbiome. I break down how bacterial overgrowth, inflammation, and altered neurotransmitter signaling can interfere with sleep, even when sleep hygiene is dialed in. The focus is on understanding root causes, not fear-mongering, and identifying practical, low-hanging interventions that support both gut health and recovery. Topics discussed:
- Gut health and sleep quality
- Dysbiosis and insomnia
- Microbiome signaling pathways
- Inflammation and sleep disruption
- Bacterial overgrowth patterns
- Lifestyle drivers of gut issues
- Practical gut-first interventions
----------
My Live Program for Coaches: The Functional Nutrition and Metabolism Specialization
www.metabolismschool.com
----------
[Free] Metabolism School 101: The Video Series
http://www.metabolismschool.com/metabolism-101
----------
Subscribe to My Youtube Channel:
https://youtube.com/@sammillerscience?si=s1jcR6Im4GDHbw_1
----------
Grab a Copy of My New Book - Metabolism Made Simple
----------
Stay Connected:
Instagram: @sammillerscience
Youtube: SamMillerScience
Facebook: The Nutrition Coaching Collaborative Community
TikTok: @sammillerscience
----------
“This Podcast is for general informational purposes only and does not constitute the practice of medicine, nursing or other professional health care services, including the giving of medical advice, and no doctor/patient relationship is formed. The use of information on this podcast and the show notes or the reliance on the information provided is to be done at the user's own risk. The content of this podcast is not intended to be a substitute for professional medical advice, diagnosis, or treatment and is for educational purposes only. Always consult your physician before beginning any exercise program and users should not disregard, or delay in obtaining, medical advice for any medical condition they may have and should seek the assistance of their health care professionals for any such conditions. By accessing this Podcast, the listener acknowledges that the entire contents and design of this Podcast, are the property of Oracle Athletic Science LLC, or used by Oracle Athletic Science LLC with permission, and are protected under U.S. and international copyright and trademark laws. Except as otherwise provided herein, users of this Podcast may save and use information contained in the Podcast only for personal or other non-commercial, educational purposes. No other use, including, without limitation, reproduction, retransmission or editing, of this Podcast may be made without the prior written permission of Oracle Athletic Science LLC, which may be requested by contacting the Oracle Athletic Science LLC by email at operations@sammillerscience.com. By accessing this Podcast, the listener acknowledges that Oracle Athletic Science LLC makes no warranty, guarantee, or representation as to the accuracy or sufficiency of the information featured in this Podcast."
A new food pyramid sparked familiar outrage, quick conclusions, and polarized takes across the nutrition industry. This episode isn’t about defending or attacking the graphic itself, it’s about understanding what population-level guidelines are meant to do, and why they’re often misunderstood. Topics discussed:
- Population-level nutrition guidance
- Food pyramid history
- Why guidelines fail
- Industry overreaction
- Individualized nutrition needs
- Coaching versus graphics
- Metabolic context matters
----------
My Live Program for Coaches: The Functional Nutrition and Metabolism Specialization
www.metabolismschool.com
----------
[Free] Metabolism School 101: The Video Series
http://www.metabolismschool.com/metabolism-101
----------
Subscribe to My Youtube Channel:
https://youtube.com/@sammillerscience?si=s1jcR6Im4GDHbw_1
----------
Grab a Copy of My New Book - Metabolism Made Simple
----------
Stay Connected:
Instagram: @sammillerscience
Youtube: SamMillerScience
Facebook: The Nutrition Coaching Collaborative Community
TikTok: @sammillerscience
----------
“This Podcast is for general informational purposes only and does not constitute the practice of medicine, nursing or other professional health care services, including the giving of medical advice, and no doctor/patient relationship is formed. The use of information on this podcast and the show notes or the reliance on the information provided is to be done at the user's own risk. The content of this podcast is not intended to be a substitute for professional medical advice, diagnosis, or treatment and is for educational purposes only. Always consult your physician before beginning any exercise program and users should not disregard, or delay in obtaining, medical advice for any medical condition they may have and should seek the assistance of their health care professionals for any such conditions. By accessing this Podcast, the listener acknowledges that the entire contents and design of this Podcast, are the property of Oracle Athletic Science LLC, or used by Oracle Athletic Science LLC with permission, and are protected under U.S. and international copyright and trademark laws. Except as otherwise provided herein, users of this Podcast may save and use information contained in the Podcast only for personal or other non-commercial, educational purposes. No other use, including, without limitation, reproduction, retransmission or editing, of this Podcast may be made without the prior written permission of Oracle Athletic Science LLC, which may be requested by contacting the Oracle Athletic Science LLC by email at operations@sammillerscience.com. By accessing this Podcast, the listener acknowledges that Oracle Athletic Science LLC makes no warranty, guarantee, or representation as to the accuracy or sufficiency of the information featured in this Podcast."
The post-holiday momentum hangover isn’t imaginary, but it’s also not a failure of discipline or motivation. What most people experience in January is a quiet loss of structure as routines, environments, and accountability systems loosen. This episode breaks down why momentum fades, how physiology and environment contribute to that drop, and what actually restores traction. Topics discussed:
- Post-holiday momentum loss
- Accountability as a system
- Physiological reset through movement
- Reverse-engineering past success
- Environment and performance
- Mental input management
- Shrinking the time horizon
----------
My Live Program for Coaches: The Functional Nutrition and Metabolism Specialization
www.metabolismschool.com
----------
[Free] Metabolism School 101: The Video Series
http://www.metabolismschool.com/metabolism-101
----------
Subscribe to My Youtube Channel:
https://youtube.com/@sammillerscience?si=s1jcR6Im4GDHbw_1
----------
Grab a Copy of My New Book - Metabolism Made Simple
----------
Stay Connected:
Instagram: @sammillerscience
Youtube: SamMillerScience
Facebook: The Nutrition Coaching Collaborative Community
TikTok: @sammillerscience
----------
“This Podcast is for general informational purposes only and does not constitute the practice of medicine, nursing or other professional health care services, including the giving of medical advice, and no doctor/patient relationship is formed. The use of information on this podcast and the show notes or the reliance on the information provided is to be done at the user's own risk. The content of this podcast is not intended to be a substitute for professional medical advice, diagnosis, or treatment and is for educational purposes only. Always consult your physician before beginning any exercise program and users should not disregard, or delay in obtaining, medical advice for any medical condition they may have and should seek the assistance of their health care professionals for any such conditions. By accessing this Podcast, the listener acknowledges that the entire contents and design of this Podcast, are the property of Oracle Athletic Science LLC, or used by Oracle Athletic Science LLC with permission, and are protected under U.S. and international copyright and trademark laws. Except as otherwise provided herein, users of this Podcast may save and use information contained in the Podcast only for personal or other non-commercial, educational purposes. No other use, including, without limitation, reproduction, retransmission or editing, of this Podcast may be made without the prior written permission of Oracle Athletic Science LLC, which may be requested by contacting the Oracle Athletic Science LLC by email at operations@sammillerscience.com. By accessing this Podcast, the listener acknowledges that Oracle Athletic Science LLC makes no warranty, guarantee, or representation as to the accuracy or sufficiency of the information featured in this Podcast."
Most people think goal failure is a mindset issue, but the real constraint is often physiological. This episode reframes why we don’t rise to our goals, we return to the baseline our nervous system has been conditioned to expect. I break down how predictive physiology, stress exposure, and environmental consistency shape metabolism, hormones, and behavior over time. Topics discussed:
- Physiological baselines explained
- Predictive nervous system
- Stress conditioning patterns
- Homeostasis versus optimization
- Familiar stress responses
- Environment over intensity
----------
My Live Program for Coaches: The Functional Nutrition and Metabolism Specialization
www.metabolismschool.com
----------
[Free] Metabolism School 101: The Video Series
http://www.metabolismschool.com/metabolism-101
----------
Subscribe to My Youtube Channel:
https://youtube.com/@sammillerscience?si=s1jcR6Im4GDHbw_1
----------
Grab a Copy of My New Book - Metabolism Made Simple
----------
Stay Connected:
Instagram: @sammillerscience
Youtube: SamMillerScience
Facebook: The Nutrition Coaching Collaborative Community
TikTok: @sammillerscience
----------
“This Podcast is for general informational purposes only and does not constitute the practice of medicine, nursing or other professional health care services, including the giving of medical advice, and no doctor/patient relationship is formed. The use of information on this podcast and the show notes or the reliance on the information provided is to be done at the user's own risk. The content of this podcast is not intended to be a substitute for professional medical advice, diagnosis, or treatment and is for educational purposes only. Always consult your physician before beginning any exercise program and users should not disregard, or delay in obtaining, medical advice for any medical condition they may have and should seek the assistance of their health care professionals for any such conditions. By accessing this Podcast, the listener acknowledges that the entire contents and design of this Podcast, are the property of Oracle Athletic Science LLC, or used by Oracle Athletic Science LLC with permission, and are protected under U.S. and international copyright and trademark laws. Except as otherwise provided herein, users of this Podcast may save and use information contained in the Podcast only for personal or other non-commercial, educational purposes. No other use, including, without limitation, reproduction, retransmission or editing, of this Podcast may be made without the prior written permission of Oracle Athletic Science LLC, which may be requested by contacting the Oracle Athletic Science LLC by email at operations@sammillerscience.com. By accessing this Podcast, the listener acknowledges that Oracle Athletic Science LLC makes no warranty, guarantee, or representation as to the accuracy or sufficiency of the information featured in this Podcast."
Longevity conversations have become increasingly extreme, often prioritizing supplements and protocols over fundamentals. In this episode, I share six core longevity lessons that don’t require quitting your job or chasing the latest biohacking trend. Grounded in both evidence and personal experience, this conversation focuses on the basics that most people overlook. The emphasis is on improving healthspan, not just lifespan, and understanding what actually creates resilience as we age. Topics Discussed:
- Longevity versus healthspan
- Essential health testing markers
- Strength training and aging
- Protein intake and appetite
- Walking
----------
My Live Program for Coaches: The Functional Nutrition and Metabolism Specialization
www.metabolismschool.com
----------
[Free] Metabolism School 101: The Video Series
http://www.metabolismschool.com/metabolism-101
----------
Subscribe to My Youtube Channel:
https://youtube.com/@sammillerscience?si=s1jcR6Im4GDHbw_1
----------
Grab a Copy of My New Book - Metabolism Made Simple
----------
Stay Connected:
Instagram: @sammillerscience
Youtube: SamMillerScience
Facebook: The Nutrition Coaching Collaborative Community
TikTok: @sammillerscience
----------
“This Podcast is for general informational purposes only and does not constitute the practice of medicine, nursing or other professional health care services, including the giving of medical advice, and no doctor/patient relationship is formed. The use of information on this podcast and the show notes or the reliance on the information provided is to be done at the user's own risk. The content of this podcast is not intended to be a substitute for professional medical advice, diagnosis, or treatment and is for educational purposes only. Always consult your physician before beginning any exercise program and users should not disregard, or delay in obtaining, medical advice for any medical condition they may have and should seek the assistance of their health care professionals for any such conditions. By accessing this Podcast, the listener acknowledges that the entire contents and design of this Podcast, are the property of Oracle Athletic Science LLC, or used by Oracle Athletic Science LLC with permission, and are protected under U.S. and international copyright and trademark laws. Except as otherwise provided herein, users of this Podcast may save and use information contained in the Podcast only for personal or other non-commercial, educational purposes. No other use, including, without limitation, reproduction, retransmission or editing, of this Podcast may be made without the prior written permission of Oracle Athletic Science LLC, which may be requested by contacting the Oracle Athletic Science LLC by email at operations@sammillerscience.com. By accessing this Podcast, the listener acknowledges that Oracle Athletic Science LLC makes no warranty, guarantee, or representation as to the accuracy or sufficiency of the information featured in this Podcast."
Most people would never tolerate someone speaking to them the way they speak to themselves... and yet that internal dialogue often goes unchecked. This conversation explores where negative self-talk actually comes from, why logic and reassurance rarely silence it, and how confidence is built through evidence rather than motivation or affirmations. I break down why coaches and high-achievers are especially vulnerable to an overactive inner critic, and how repeated follow-through quietly reshapes self-trust. Topics Discussed:
- The inner critic explained
- Negative self-talk patterns
- Confidence through evidence
- Follow-through and self-trust
- Coaches and self-judgment
- Identity versus behavior
- Small actions, big impact
----------
My Live Program for Coaches: The Functional Nutrition and Metabolism Specialization
www.metabolismschool.com
----------
[Free] Metabolism School 101: The Video Series
http://www.metabolismschool.com/metabolism-101
----------
Subscribe to My Youtube Channel:
https://youtube.com/@sammillerscience?si=s1jcR6Im4GDHbw_1
----------
Grab a Copy of My New Book - Metabolism Made Simple
----------
Stay Connected:
Instagram: @sammillerscience
Youtube: SamMillerScience
Facebook: The Nutrition Coaching Collaborative Community
TikTok: @sammillerscience
----------
“This Podcast is for general informational purposes only and does not constitute the practice of medicine, nursing or other professional health care services, including the giving of medical advice, and no doctor/patient relationship is formed. The use of information on this podcast and the show notes or the reliance on the information provided is to be done at the user's own risk. The content of this podcast is not intended to be a substitute for professional medical advice, diagnosis, or treatment and is for educational purposes only. Always consult your physician before beginning any exercise program and users should not disregard, or delay in obtaining, medical advice for any medical condition they may have and should seek the assistance of their health care professionals for any such conditions. By accessing this Podcast, the listener acknowledges that the entire contents and design of this Podcast, are the property of Oracle Athletic Science LLC, or used by Oracle Athletic Science LLC with permission, and are protected under U.S. and international copyright and trademark laws. Except as otherwise provided herein, users of this Podcast may save and use information contained in the Podcast only for personal or other non-commercial, educational purposes. No other use, including, without limitation, reproduction, retransmission or editing, of this Podcast may be made without the prior written permission of Oracle Athletic Science LLC, which may be requested by contacting the Oracle Athletic Science LLC by email at operations@sammillerscience.com. By accessing this Podcast, the listener acknowledges that Oracle Athletic Science LLC makes no warranty, guarantee, or representation as to the accuracy or sufficiency of the information featured in this Podcast."
Drawing from nearly two decades of coaching experience, I break down five universal principles I’ve consistently seen in individuals who actually follow through on their goals. This conversation moves beyond generic goal-setting frameworks and focuses on identity, momentum, decision-making, and psychological resilience. Topics discussed:
- Why resolutions fail
- Taking imperfect action
- Momentum and follow-through
- Measuring progress backward
- Managing negative self-talk
- Mistakes versus identity
- Sustainable goal execution
----------
My Live Program for Coaches: The Functional Nutrition and Metabolism Specialization
www.metabolismschool.com
----------
[Free] Metabolism School 101: The Video Series
http://www.metabolismschool.com/metabolism-101
----------
Subscribe to My Youtube Channel:
https://youtube.com/@sammillerscience?si=s1jcR6Im4GDHbw_1
----------
Grab a Copy of My New Book - Metabolism Made Simple
----------
Stay Connected:
Instagram: @sammillerscience
Youtube: SamMillerScience
Facebook: The Nutrition Coaching Collaborative Community
TikTok: @sammillerscience
----------
“This Podcast is for general informational purposes only and does not constitute the practice of medicine, nursing or other professional health care services, including the giving of medical advice, and no doctor/patient relationship is formed. The use of information on this podcast and the show notes or the reliance on the information provided is to be done at the user's own risk. The content of this podcast is not intended to be a substitute for professional medical advice, diagnosis, or treatment and is for educational purposes only. Always consult your physician before beginning any exercise program and users should not disregard, or delay in obtaining, medical advice for any medical condition they may have and should seek the assistance of their health care professionals for any such conditions. By accessing this Podcast, the listener acknowledges that the entire contents and design of this Podcast, are the property of Oracle Athletic Science LLC, or used by Oracle Athletic Science LLC with permission, and are protected under U.S. and international copyright and trademark laws. Except as otherwise provided herein, users of this Podcast may save and use information contained in the Podcast only for personal or other non-commercial, educational purposes. No other use, including, without limitation, reproduction, retransmission or editing, of this Podcast may be made without the prior written permission of Oracle Athletic Science LLC, which may be requested by contacting the Oracle Athletic Science LLC by email at operations@sammillerscience.com. By accessing this Podcast, the listener acknowledges that Oracle Athletic Science LLC makes no warranty, guarantee, or representation as to the accuracy or sufficiency of the information featured in this Podcast."
High-protein diets and Mediterranean-style eating are often positioned as competing approaches, but the reality is more nuanced. Using a randomized controlled trial as the foundation, I walk through how these two diets compare for fat loss, body composition, and metabolic outcomes. Rather than framing this as an either–or debate, the focus is on extracting the best elements of both approaches and applying them in a way that actually fits real people and real coaching scenarios. Topics discussed:
- High protein diet benefits
- Mediterranean diet principles
- Fat loss study comparison
- Protein and satiety
- Thermic effect of food
- Study design limitations
----------
My Live Program for Coaches: The Functional Nutrition and Metabolism Specialization
www.metabolismschool.com
----------
[Free] Metabolism School 101: The Video Series
http://www.metabolismschool.com/metabolism-101
----------
Subscribe to My Youtube Channel:
https://youtube.com/@sammillerscience?si=s1jcR6Im4GDHbw_1
----------
Grab a Copy of My New Book - Metabolism Made Simple
----------
Stay Connected:
Instagram: @sammillerscience
Youtube: SamMillerScience
Facebook: The Nutrition Coaching Collaborative Community
TikTok: @sammillerscience
----------
“This Podcast is for general informational purposes only and does not constitute the practice of medicine, nursing or other professional health care services, including the giving of medical advice, and no doctor/patient relationship is formed. The use of information on this podcast and the show notes or the reliance on the information provided is to be done at the user's own risk. The content of this podcast is not intended to be a substitute for professional medical advice, diagnosis, or treatment and is for educational purposes only. Always consult your physician before beginning any exercise program and users should not disregard, or delay in obtaining, medical advice for any medical condition they may have and should seek the assistance of their health care professionals for any such conditions. By accessing this Podcast, the listener acknowledges that the entire contents and design of this Podcast, are the property of Oracle Athletic Science LLC, or used by Oracle Athletic Science LLC with permission, and are protected under U.S. and international copyright and trademark laws. Except as otherwise provided herein, users of this Podcast may save and use information contained in the Podcast only for personal or other non-commercial, educational purposes. No other use, including, without limitation, reproduction, retransmission or editing, of this Podcast may be made without the prior written permission of Oracle Athletic Science LLC, which may be requested by contacting the Oracle Athletic Science LLC by email at operations@sammillerscience.com. By accessing this Podcast, the listener acknowledges that Oracle Athletic Science LLC makes no warranty, guarantee, or representation as to the accuracy or sufficiency of the information featured in this Podcast."
PCOS is often discussed in extremes, but the reality is far more nuanced. Drawing from a large meta-analysis, I walk through what the research actually shows about energy expenditure, metabolic flexibility, and fat loss in women with PCOS. This conversation explores why results can vary so widely, how insulin resistance and metabolic adaptation influence outcomes, and where standard calorie-based models fall short.
Topics discussed:
- PCOS and energy balance
- Metabolic rate variability
- Insulin resistance implications
- Metabolic flexibility challenges
- Brown fat and metabolism
- Dieting and metabolic adaptation
----------
My Live Program for Coaches: The Functional Nutrition and Metabolism Specialization
www.metabolismschool.com
----------
[Free] Metabolism School 101: The Video Series
http://www.metabolismschool.com/metabolism-101
----------
Subscribe to My Youtube Channel:
https://youtube.com/@sammillerscience?si=s1jcR6Im4GDHbw_1
----------
Grab a Copy of My New Book - Metabolism Made Simple
----------
Stay Connected:
Instagram: @sammillerscience
Youtube: SamMillerScience
Facebook: The Nutrition Coaching Collaborative Community
TikTok: @sammillerscience
----------
“This Podcast is for general informational purposes only and does not constitute the practice of medicine, nursing or other professional health care services, including the giving of medical advice, and no doctor/patient relationship is formed. The use of information on this podcast and the show notes or the reliance on the information provided is to be done at the user's own risk. The content of this podcast is not intended to be a substitute for professional medical advice, diagnosis, or treatment and is for educational purposes only. Always consult your physician before beginning any exercise program and users should not disregard, or delay in obtaining, medical advice for any medical condition they may have and should seek the assistance of their health care professionals for any such conditions. By accessing this Podcast, the listener acknowledges that the entire contents and design of this Podcast, are the property of Oracle Athletic Science LLC, or used by Oracle Athletic Science LLC with permission, and are protected under U.S. and international copyright and trademark laws. Except as otherwise provided herein, users of this Podcast may save and use information contained in the Podcast only for personal or other non-commercial, educational purposes. No other use, including, without limitation, reproduction, retransmission or editing, of this Podcast may be made without the prior written permission of Oracle Athletic Science LLC, which may be requested by contacting the Oracle Athletic Science LLC by email at operations@sammillerscience.com. By accessing this Podcast, the listener acknowledges that Oracle Athletic Science LLC makes no warranty, guarantee, or representation as to the accuracy or sufficiency of the information featured in this Podcast."
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