Fat Science Mailbag: Your GLP-1 Questions on Pregnancy, Dosing, and Why Diets Cause Fat Gain
Mailbag: Your GLP-1 Questions on Pregnancy, Dosing, and Why Diets Cause Fat Gain
What happens when you stop GLP-1 medications before getting pregnant? Why might your thyroid numbers change on Zepbound? And why do people gain more body fat after dieting — even when they're still eating well? Dr. Cooper tackles your toughest questions.
This week on Fat Science, Dr. Emily Cooper, Mark Wright, and Andrea Taylor answer listener questions covering pregnancy planning on GLP-1s, unmasked thyroid problems, injection site reactions, mechanical eating after bariatric surgery, why diets cause fat regain at a cellular level, and discussing with your doctor whether you should (or shouldn't) increase your medication dose.
Key Takeaways
GLP-1 medications aren't causing gestational diabetes — they may have been masking underlying metabolic dysfunction that becomes visible when the medication is stopped
Thyroid problems can be "unmasked" by GLP-1 treatment because the medications signal to your brain that you're not starving, allowing the pituitary TSH to rise, sometime uncovering a pre-existing thyroid issue
Zepbound may improve iron absorption — if iron levels go too high, testing for hemochromatosis may be warranted
To reduce injection site reactions: warm the medication to room temperature, clean and prep skin but don't over-rub with alcohol, inject at exactly 90 degrees, don't pinch the skin, and stay relaxed
Diets cause fat regain at the cellular level — it's chemistry, not willpower — and the fat often accumulates in the visceral area around organs
There's no need to increase your GLP-1 dose if you're making good progress — an annual weight loss rate of 15% or higher is considered strong
Notable Quote
"You can't think that just because somebody's weight is high, it's because something they're doing is wrong. That is just not founded in science whatsoever." — Dr. Emily Cooper
Links & Resources
Podcast Home: fatsciencepodcast.com
Cooper Center for Metabolism: coopermetabolic.com
Resources from Dr. Cooper: coopermetabolic.com/resources
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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.