Why Your Heart Races at Rest

Why can your heart race even when you’re resting with adrenal insufficiency?

In this episode, we explore one of the most unsettling symptoms many people experience: a racing heart that seems to happen out of nowhere—even when you’re sitting still, trying to relax, or doing very little physically. For many, it can feel confusing, alarming, and difficult to explain.

We break down why this can happen physiologically. Cortisol and aldosterone both play important roles in maintaining blood pressure, fluid balance, circulation, and nervous system stability. When those systems are under-supported or fluctuating, the body may compensate by increasing heart rate in an effort to maintain blood flow and stability.

This episode looks at how dehydration, low blood pressure, electrolyte shifts, nervous system activation, stress, and cortisol timing can all contribute to tachycardia and palpitations in adrenal insufficiency. We also talk about why symptoms can vary across primary, secondary, tertiary, and steroid-induced adrenal insufficiency.

Most importantly, we focus on understanding the symptom without fear or self-blame. A racing heart doesn’t automatically mean something catastrophic is happening—but it can reflect a body working harder to maintain balance under altered physiological conditions.

If you’ve ever wondered why your heart feels like it’s racing even when your body is technically “at rest,” this episode will help you better understand why.

Learn more at www.myadrenallife.com or join our My Adrenal Life Facebook Group.

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