The Longevity Podcast: Optimizing HealthSpan & MindSpan

Send us Fan Mail What if the clearest signal about your brain’s future isn’t hidden inside an MRI, but floating in your blood right now? We dig into Neurofilament Light Chain (NFL), a nervous system biomarker that behaves like a smoke alarm for ongoing nerve damage and could help shift brain health from reactive to proactive. We anchor the story in a remarkable study of 495 Japanese centenarians f...

Send us Fan Mail You’ve heard the standard dementia prevention script: eat well, sleep more, do the puzzles, and hope for good genes. Then a result lands that doesn’t fit the script at all, a routine shingles vaccine associated with a 33% lower risk of dementia in a real-world study of 1.5 million Medicare patients. We dig into what that finding does and does not mean, why it’s so hard to dismiss,...

Send us Fan Mail Alzheimer’s has been sold to all of us as a neuron story: plaques, tangles, and brain cells fading away. But the data we walk through here points to a more unsettling possibility that the real tipping point is structural. When the brain’s blood vessels fail, memory can fall apart even faster, and what looks like “classic Alzheimer’s dementia” may actually be a vascular collapse hi...

Send us Fan Mail A medical breakthrough can still fail at the pharmacy counter. We finally have amyloid-targeting drugs for early-stage Alzheimer’s disease, and they are already on the market, but several major health systems have looked at the same evidence and refused to pay. That contradiction is the mystery we unpack, using the explosive Glasgow IPCAD meeting as our guide to what’s really bloc...

Send us Fan Mail A camera watches you walk across a room and can estimate your biological age. That sounds like science fiction until you see the data and the logic behind it. We break down a 2026 multidimensional modeling study that replaces the idea of “age as a number” with age as measurable wear and tear across your body and brain, using tools that are surprisingly practical: a marker-free 3D...

Send us Fan Mail Depression and dementia get talked about like two separate problems, until you ask the uncomfortable question: which one comes first? We dig into a huge 22-year longitudinal study (over 13,000 Americans in the Health and Retirement Study) to figure out whether depressive symptoms are a modifiable dementia risk factor or an early clinical warning sign of Alzheimer’s disease and rel...

Send us Fan Mail Think your daily health choices only matter for your heart and waistline? The research we’re unpacking challenges that assumption and makes a sharper, more urgent claim: the same habits may interact with silent Alzheimer’s pathology in your brain years before any symptom shows up. We walk through a major analysis combining the A4 and LEARN cohorts (1,707 cognitively unimpaired adu...

Send us Fan Mail Fish oil has a near-halo status in nutrition culture: a simple, golden capsule that promises better memory, sharper thinking, and protection from cognitive decline. But a landmark longitudinal analysis using ADNI data and published in the Journal of Prevention of Alzheimer’s Disease forces a rethink, suggesting omega-3 supplement use in older adults may be linked to accelerated de...

Send us Fan Mail The data point that stops us cold: at the same level of Alzheimer’s pathology, people living alone can score higher on cognitive testing than people living with others. We walk through a mind-bending April 2026 study that pulls from more than 11,000 participants and asks two deceptively simple questions with enormous stakes for brain health and aging: are you partnered, and do you...

Send us Fan Mail Alzheimer’s is coming at the world like a demographic tidal wave and the hardest part is admitting what we still can’t do: there’s no cure. But what we can do is changing quickly, and the most surprising shift is where the real cognitive gains might come from. We dig into a major 2026 Bayesian network meta-analysis spanning 57 randomized controlled trials and 6,737 people, asking...

Send us Fan Mail Your most emotionally brutal year might not just be a memory. It may have left a measurable biological footprint on your brain that can shape cognitive health 30 or 40 years from now. We dig into a groundbreaking 2026 paper in the Journal of Prevention of Alzheimer’s Disease that puts real math behind a question people usually treat as “just mental”: how clinical depression and bi...

Send us Fan Mail This podcast is created by Ai for educational and entertainment purposes only and does not constitute professional medical or health advice. Please talk to your healthcare team for medical advice.  Never miss an episode—subscribe on your favorite podcast app!

Send us Fan Mail What if the biggest lever for preventing dementia isn’t hidden in your DNA, but sitting in your calendar, your sleep, your diet, and even your hearing? We dig into a 2026 German study published in the Journal of Prevention of Alzheimer’s Disease that argues up to 45% of dementia risk is modifiable and then shows what “modifiable” actually looks like when you measure it person by p...

Send us Fan Mail Alzheimer’s doesn’t wait for a diagnosis to begin. The brain changes can start quietly for years, even a decade, while someone looks totally fine, passes cognitive tests, drives, works, and pays the same routine healthcare bills as their peers. That raises a tough question with massive public health stakes: if the disease is already active, when does it start costing Medicare real...

Send us Fan Mail A tiny smudge in a century-old medical paper might be one of the most useful clues we have for Alzheimer’s disease prevention today. We trace that smudge back to 1907, when Alois Alzheimer documented not only plaques and tangles, but also lipid accumulation inside glial cells, a finding the field largely shrugged off for decades. Once you add modern genetics, especially ApoE4 and...

Send us Fan Mail Your medicine cabinet feels organized for a reason: we like to believe each pill has a single target and stays in its lane. Then we hit a finding that blows up that mental map. Millions of people take statins and other cholesterol drugs to manage LDL and cardiovascular risk, but a massive new dataset suggests those same lipid-lowering regimens may also slow Alzheimer’s disease dec...

Send us Fan Mail A clean diagnosis feels like an X-ray: obvious problem, obvious fix. Alzheimer’s disease is the opposite, and the arrival of disease-modifying anti-amyloid therapies like lecanemab and donanemab makes that gap impossible to ignore. We dig into why real-world patients do not look like “pristine” clinical trial participants, and why a simple amyloid positive label can hide wildly di...

Send us Fan Mail Your brain is an energy hog running on an ATP battery that lasts only seconds, and that one fact changes how you should think about “brain supplements.” We dig into why creatine is more than a weightlifting staple, how phosphocreatine works like a built-in power bank, and why the blood brain barrier makes brain saturation slow, picky, and easy to study the wrong way. If you’ve eve...

Send us Fan Mail Sleep turns on a hidden plumbing system that pressure-washes the brain, clearing toxic waste that builds up during wakefulness. We connect brand-new human imaging with practical sleep habits so you can protect deep sleep, memory, and long-term cognitive health.  • why the brain accumulates metabolic waste while awake  • how the glymphatic system works and why science missed it for...

Send us Fan Mail A probiotic is supposed to help you recover after antibiotics. But what if the wrong probiotic acts like an invasive weed, moves into the empty real estate in your gut, and blocks your native microbiome from growing back? We unpack the science behind that unsettling possibility and use a comprehensive medical review by Dr. Kristen Glorioso to separate real microbiome research from...

Send us Fan Mail A heart that ticks like a perfect metronome sounds reassuring, but it can be a warning sign. We dig into heart rate variability (HRV) and why the healthiest hearts show constant micro-adjustments between beats, reflecting a nervous system that can hit the gas when it needs to and slam the brakes when it’s time to recover. If you’ve ever stared at your Apple Watch, Oura Ring, Garmi...

Send us Fan Mail Some brains carry severe Alzheimer’s pathology while staying cognitively normal, and that paradox forces us to rethink what “prevention” can honestly mean. We map the data behind cognitive reserve, the 2024 Lancet risk factors, the U.S. POINTER lifestyle trial, and the promise and limits of anti-amyloid drugs.  • primary prevention versus secondary prevention definitions  • compre...

Send us Fan Mail We stop obsessing over wrinkles and start looking at the real “cellular battery” that powers aging: NAD+. We weigh the hype against NIH workshop science, clinical trial signals, and the blunt reminder that exercise can raise NAD+ to youthful levels without a biohacker budget.  • NAD+ as a coenzyme that converts food into ATP  • NAD+ role in DNA repair enzymes and cellular maintena...

Send us Fan Mail We trace how autophagy keeps us alive by turning cells into disciplined self-recyclers when nutrients drop, then map the real control switches that wellness culture often gets wrong. We follow the story from lysosomes and yeast genetics to MTORC1, spermidine, and why the healthiest strategy is balance between building and cleaning.  • what autophagy is and why “self-eating” is sur...

Send us Fan Mail We follow the science that links deep sleep, circadian timing, and brain energy to how fast we age. We connect glymphatic waste clearance, the SCN master clock, melatonin biology, and meal timing to Alzheimer’s risk, memory function, and longevity. • the glymphatic system as a deep sleep waste-clearance mechanism for amyloid beta and tau • how cerebrospinal fluid moves through per...