Fast. Feast. Repeat. Intermittent Fasting For Life

Episode 121: Fasting With an Underactive Thyroid, Suddenly Feeling Hungry, Snack vs. Meal, and More

Oct 22, 2025

This episode dives into the nuances of intermittent fasting, including how to adapt after pregnancy and the challenges faced with an underactive thyroid. The hosts provide insights on managing thyroid medication, energy levels, and electrolytes. Listeners also explore early-stage hunger and the importance of consistency. A fun debate ensues about whether brushing teeth breaks a fast. Plus, there's a creative suggestion for using protein-rich meals to kick off the eating window. The importance of a supportive community in this journey is emphasized.

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ADVICE

Restart Fasting While Treating Low Thyroid

Take thyroid medication as directed and re-evaluate dosage with your doctor if energy doesn't improve.
Do clean fasting and light walks to boost energy while your thyroid treatment starts working.

ANECDOTE

Transient Hypothyroid Case In Sheri's Family

Sheri described her husband's transient hypothyroid episode that resolved without long-term medication.
His labs normalized after several months and he discontinued meds without issue.

INSIGHT

Fasting Can Change Thyroid Medicine Needs

Fasting can change how much thyroid medication you need because the liver metabolizes hormones more efficiently.
Expect potential dose adjustments once fasting improves liver function.

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Welcome to this week’s episode of Fast. Feast. Repeat. Intermittent Fasting for Life, with Gin Stephens and Sheri Bullock.
To make a submission for the podcast, go to fastfeastrepeat.com/submit. We are a community-driven podcast, and we look forward to sharing your questions, success stories, non-scale victories, IF tweaks, motivational quotes (and more!) on each episode of the podcast.
Resources used in today’s episode: Fast Safe Melatonin: https://amzn.to/3Km31e3
For one on one IF coaching, you can email me @ sheri@fastfeastrepeat.com
https://www.fastfeastrepeat.com/sheri.html
https://crunchi.com/?als=SheriBullock
Want to learn more about BiOptimizer’s Magnesium Breakthrough? Visit www.bioptimizers.com/fastfeastrepeat and use code FFR15 to save 15% off any order.
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Are you ready to take your intermittent fasting lifestyle to the next level? There’s nothing better than community to help with that. In the Delay, Don’t Deny community we all embrace the clean fast, and there’s just the right support for you as you live your intermittent fasting lifestyle.
Connect with both Gin and Sheri in the community, as well as thousands of other intermittent fasters who are there to support you along your journey. If you’re new to intermittent fasting or recommitting to the IF lifestyle, join the 28-Day FAST Start group. After your fast start, join us for support in The 1st Year group. Need tips for long term maintenance? We have a place for that! There are many more useful spaces beyond these, and you can interact in as many as you like.
Visit ginstephens.com/community to join us. An annual membership costs just over a dollar a week when you do the math. If you aren’t ready to fully commit for a year, join for a month and you can cancel at any time. If you know you’ll want to stay forever, we also have a lifetime membership option available.
IF is free. You don’t need to join our community to fast. But if you’re looking for support from a community of like-minded IFers, we are here for you at ginstephens.com/community.