128. The Brain Health Warning Signs That Start Before Memory Loss with Dr. David Perlmutter

There is a reason brain health feels so urgent right now. So many people are watching parents, grandparents, partners, and loved ones face Alzheimer’s, Parkinson’s, dementia, depression, anxiety, or cognitive decline, while quietly wondering if the same future is waiting for them. With Alzheimer’s projected to affect nearly 14 million Americans by 2060, this is not a conversation we can keep saving for later.

Most of us think about the brain only when something starts to feel different, but cognitive decline can begin 20 to 30 years before a single symptom appears. That means the way we eat, move, sleep, manage stress, support blood sugar, and care for our metabolism may be shaping the brain long before memory starts to slip. And with only about 6% of American adults considered metabolically healthy, the connection between insulin resistance, inflammation, and brain aging becomes much harder to ignore.

In this episode, I sit down with Dr. David Perlmutter to talk about why prevention has to begin while you still feel fine, which metabolic number he wishes more people knew, and what daily choices may be protecting or threatening your brain without you realizing it. Dr. Perlmutter is a board-certified neurologist, six-time New York Times bestselling author, and author of Brain Defenders, with decades of work connecting the brain to the body, gut, metabolism, inflammation, and the way we live every day.

What’s Discussed:

04:45 How Dr. Perlmutter thinks about connection, gratitude, and what it means to be rooted.

12:20 The daily habit he says may be one of the worst for your brain.

17:54 Why brain decline does not begin the moment memory fails.

24:17 What ultra-processed food may be doing to long-term brain health.

27:08 How inflammation connects depression, anxiety, and neurodegeneration.

31:20 What “I feel fine right now” can miss about the future of the brain.

39:59 The key metabolic labs Dr. Perlmutter wants people to know.

46:50 Why your gut bacteria may act like a signal system for the brain.