Wired Differently: Caffeine & Your Genetics

What this episode covers

Ever wondered why your friend can down four espresso shots and feel nothing while one cup of coffee sends your heart racing? This week, I am joined by Katie Harnan to break down the science of caffeine metabolism and why the universal "400mg of caffeine a day" recommendation doesn't work for everyone. Plus: life updates, graduation, playoff hockey, reality tv, & more⁠⁠Personal IG: @macileejones⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠Podcast IG: @myverbaljournal.letschat⁠⁠⁠⁠Katies IG: @katieharnen⁠

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Frequently Asked Questions

How long is this episode of My Verbal Journal: Let’s Chat?

This episode is 32 minutes long.

When was this My Verbal Journal: Let’s Chat episode published?

This episode was published on April 29, 2026.

What is this episode about?

Ever wondered why your friend can down four espresso shots and feel nothing while one cup of coffee sends your heart racing? This week, I am joined by Katie Harnan to break down the science of caffeine metabolism and why the universal "400mg of...

Can I download this My Verbal Journal: Let’s Chat episode?

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