Are You Secretly Dehydrated? Why a 1% Drop Kills Your Focus and Mood

0:00A lot of people rely on thirst alone and they assume if I need water, my body will tell me.

0:03But the reality is thirst is actually a late signal.

0:06By the time you feel thirsty, your body's already playing catch up.

0:22Welcome to Office Hours.

0:23This is our dedicated one-on-one space to go deeper, get clearer, and explore what truly moves the needle for your health.

0:29I'm Dr.

0:29Mark Hyman, and each week we're going to pull back the curtain and share the insights, the research, the lessons that don't always make it into our conversations with guests.

0:37Because at the end of the day, you are the CEO of your own health.

0:40And for many of you, your family's health too.

0:42And you might not feel it all the time, but you have far more power and agency than you realize.

0:47I'm glad you're here.

0:51This episode is brought to you by Function Health, empowering you to live 100 healthy years with over 160 lab tests for just $365 a year.