What if the way you live today is (scientifically) changing how fast you age? In this episode, Chris Wharton sits down with Dr. William Mair, PhD — Professor at Harvard T.H. Chan School of Public Health — to break down the real science of aging, what actually works, and how to truly live better, longer.

Most of us think of aging as something that just happens to us. Dr. William Mair thinks differently — and after 30 years studying the biology of aging at Harvard, he doesn’t deal in theory – he deals in evidence.

In this conversation, Dr. Mair unpacks why age is the single biggest risk factor for nearly every chronic disease — from Alzheimer's to cancer to cardiovascular disease — and why targeting aging itself may be the most powerful thing we can do for human health and performance. But more importantly, he brings it back to you: what can you actually do, right now, to influence the rate at which your body ages?

You'll walk away understanding:

• Why your lifestyle choices are actively speeding up or slowing down your biological clock
• What the science actually says about sleep, nutrition, and exercise, and how to optimize those habits to support healthspan
• How to cut through the longevity noise — supplements, biohacks, and what's real vs. hype
• Why "healthspan" matters more than lifespan — and how to protect it
• What emerging science could change everything about how we age in the next 10–15 years

Chronological age is fixed. Biological age isn't. This episode gives you the peer-reviewed science to understand the difference — and how to act on it.