GPMD Podcast- Why ADH Matters!

Dr. Beth explains how anti-diuretic hormone (ADH) controls hydration during runs by conserving water and responding to sodium, blood volume, and stress—meaning hydration isn't just about how much you drink.

Key takeaways: avoid excessive plain water that can cause hyponatremia, replace fluids with electrolytes (and sometimes carbs) for better absorption, and tailor your hydration strategy to run length, sweat rate, and climate.