Think squashing your post-meal glucose spike is the healthy thing to do? What if that flat line on your CGM is actually telling your brain you didn't eat — and slowing your metabolism as a result?

This week on Fat Science, Dr. Emily Cooper, Mark Wright, and Andrea Taylor open the mailbag to tackle listener questions from around the world — Australia, New Zealand, and across the U.S. They dig into hormone replacement therapy and metabolism, why your GLP-1 medication might be causing hair loss, what a normal blood sugar response actually looks like, and how lipedema differs from obesity. Dr. Cooper also revisits metabolic syndrome and why it's not outdated — just underutilized.

Key Takeaways

• Hormone replacement therapy isn't a reliable tool for improving metabolism — it's better suited for symptom relief and bone health in specific situations.

• Progesterone, which must accompany estrogen if you still have your uterus, can actually disrupt metabolism in some women — acting almost like a steroid.

• A flat glucose line after eating isn't the goal — your brain needs to see glucose go up to register that you've been nourished and keep your metabolism running.

• Hair loss on GLP-1 medications is more likely tied to nutrient deficiencies (especially iron and protein) than the drugs themselves.

• Lipedema is a disease of the fat tissue itself — separate from obesity — and tirzepatide may help reduce the inflammatory symptoms even though it won't eliminate the fat deposits.

Notable Quote

"If your glucose is flat line, your brain's not very convinced that you ate much — and then you're not getting the metabolic benefit." — Dr. Emily Cooper

Links & Resources

• Podcast Home: fatsciencepodcast.com

• Cooper Center for Metabolism: coopermetabolic.com

• Resources from Dr. Cooper: coopermetabolic.com/resources

• Join Our Community: patreon.com/cw/FatSciencePodcast

• Submit Your Question: questions@fatsciencepodcast.com or dr.c@fatsciencepodcast.com

Fat Science is supported by the Diabesity Institute, a nonprofit dedicated to increasing access to effective, science-based metabolic care.

Disclaimer: This podcast is for informational purposes only and is not intended as medical advice. Please consult with a qualified healthcare provider for personalized recommendations.

What happens when you do everything "right" — the GLP-1, the protein shake, the tracking — and the scale still won't budge? This episode reveals why doing everything “right” might actually be a big part of the problem.

This week on Fat Science, Dr. Emily Cooper, Mark Wright, and Andrea Taylor welcome Sandy, a listener from Pennsylvania who has been on the metabolic health journey for over a year. Sandy's story is one many listeners will recognize: decades of dieting starting in childhood, a body that kept adapting against her, and a medical system that kept telling her to try harder. But when Dr. Cooper reviews Sandy's actual lab work live on air, what she finds reframes everything — and offers a path forward that has nothing to do with restriction.

Key Takeaways

• Suppressed leptin hides a portion of your body fat from your brain, and possibly signals your brain that you're underweight — so your brain fights weight loss even when your body doesn't need protecting.

• Low insulin isn't always healthy; it can be a sign of the "selfish brain" redirecting precious glucose to the brain at the expense of your muscles.

• Weight cycling — losing and regaining the same weight repeatedly — creates cardiovascular and metabolic risk.

• Mechanical eating is the antidote to disordered eating: structured, non-restrictive fueling that rebuilds metabolic trust.

• GLP-1 medications can suppress appetite, so under-eating becomes a real risk — especially for people already conditioned to restrict.

• The goal isn't the number on the scale. It's metabolic stability and metabolic health, and those things are not the same.

Notable Quote

"It was such a revelation to me to hear you guys talk about it — it's a metabolic disorder. It's not a willpower issue, it's not a personal failing. It's something absolutely beyond my control. Like diabetes would be. Like migraines would be." — Sandy

Links & Resources

• Podcast Home: fatsciencepodcast.com

• Cooper Center for Metabolism: coopermetabolic.com

• Resources from Dr. Cooper: coopermetabolic.com/resources

• Join Our Community: patreon.com/cw/FatSciencePodcast

• Submit Your Question: questions@fatsciencepodcast.com or dr.c@fatsciencepodcast.com

Fat Science is supported by the Diabesity Institute, a nonprofit dedicated to increasing access to effective, science-based metabolic care.

Disclaimer: This podcast is for informational purposes only and is not intended as medical advice. Please consult with a qualified healthcare provider for personalized recommendations.

The Science Behind the New Wegovy Pill (with Novo Nordisk’s Dr. Jason Brett)

What actually makes a GLP-1 pill work in the real world—and why does taking it come with such specific rules? And if these meds improve health beyond weight, why does the conversation still get stuck on the scale?

This week on Fat Science, Dr. Emily Cooper, Mark Wright, and Andrea Taylor are joined by Dr. Jason Brett of Novo Nordisk to break down the science behind the newly approved Wegovy pill. They talk about what it takes to deliver a peptide medication orally, what the dosing and day-to-day routine really look like, and why access and pricing remain such a big part of the story. The conversation also zooms out to the bigger point: treating obesity is about improving health outcomes—like liver and cardiovascular risk—not just weight.

Key Takeaways

• Oral semaglutide requires specific formulation technology to survive the stomach and be absorbed at a meaningful level.

• The “30-minute rule” isn’t random—it’s part of how the pill has a chance to work as intended.

• Treating obesity is about improving health outcomes (like liver and heart risk), not just “moving a number on a scale.”

• Pricing and access shape who can actually benefit, even when the science is strong.

• Calorie-restriction messaging can backfire for people already dealing with metabolic adaptation and under-nutrition.

Notable Quote

"Fat Science has no financial relationship with Novo Nordisk. No sponsorship. No consulting fees, no affiliate arrangements. Zero." — Mark Wright

Links & Resources

• Podcast Home: fatsciencepodcast.com

• Cooper Center for Metabolism: coopermetabolic.com

• Resources from Dr. Cooper: coopermetabolic.com/resources

• Join Our Community: patreon.com/cw/FatSciencePodcast

• Submit Your Question: questions@fatsciencepodcast.com or dr.c@fatsciencepodcast.com

Fat Science is supported by the Diabesity Institute, a nonprofit dedicated to increasing access to effective, science-based metabolic care.

Disclaimer: This podcast is for informational purposes only and is not intended as medical advice. Please consult with a qualified healthcare provider for personalized recommendations.