Yes, it's really called that, and yes, it comes from the same word you're thinking of. Spermidine is becoming bigger and bigger in the longevity world, and for good reason.

Today, Kyle's breaking down what spermidine actually is, why researchers are excited about its link to a cellular "clean-up" process called autophagy, whether it's connected to Japan's remarkably high number of centenarians, and which everyday foods (yes, including one very sticky Japanese staple) are the richest natural sources.

Plus: is the supplement version worth trying, or is food still your best bet?

In this episode:

• What spermidine is
• The autophagy connection: your body's cellular clean-up crew, and how spermidine may support it (without replacing fasting)
• Why natural spermidine levels decline with age, and what that might mean for healthy aging
• What the actual human research shows so far, including a small BDNF study and a larger observational trial, and where the evidence is still thin
• The best natural food sources of spermidine (natto, wheat germ, mushrooms, legumes, aged cheese), for people who will never touch a supplement
• Kyle's honest take on spermidine supplements, and why his current stance is "food first, supplement curious"
• Today's feelgood thing: the small, smug joy of being right

Studies mentioned:

• Nutraland rice germ extract pilot study coverage
• Longitudinal association of dietary spermidine with hepatic function indexes and cardiometabolic traits (European Journal of Nutrition)
• Effects of Spermidine Supplementation on Cognition and Biomarkers in Older Adults (JAMA Network Open)

New here? feelgoodery is your weekly space for feeling good without pretending everything's fine - nutrition, mindset, and real strategies for showing up for yourself, hosted by Kyle Buchanan (Broadcaster, Speaker, Certified Nutritional Practitioner, Resident Wellness Contributor on Canada's The Morning Show & host of The Exhale on SiriusXM), and his live-studio dog Sam.

Disclaimer: This podcast is for informational purposes only and isn't a substitute for professional medical advice. Please always consult with your health care provider.

Follow along: Instagram @itskyleb | New episodes weekly

Feeling small, scared, or checked-out lately? You're not imagining it . . . and you’re also not failing because of it. In this Season 5 premiere of feelgoodery, Kyle Buchanan breaks down why the brain defaults to passivity when bad news keeps piling up (AI anxiety, rising costs, the state of the world), and gives five practical, science-backed ways to climb out of it - from the gut-brain connection to a tough love talk, and a perspective shift that might make all the difference.

In this episode:

• Why feeling powerless right now isn't a personal failing - the psychology passivity
• The "control what you can control" method: small, immediate actions that retrain your brain out of shutdown mode
• How your gut microbiome influences anxiety and mood via the vagus nerve, and what a Stanford fermented-food study found
• The real cost of staying small and scared, and why empaths especially need to hear this one
• The reminder that might make all the difference
• Today’s feelgood thing, and why 5HTP might be something to consider

Studies mentioned:

• Learned Helplessness at Fifty: Insights From Neuroscience Maier & Seligman's reinterpretation of their own landmark theory, showing passivity is the brain's default response, not something learned
• Gut-microbiota-targeted diets modulate human immune status — the Stanford (Sonnenburg Lab) fermented-food trial, published in Cell
• Fermented Foods, Neuroticism, and Social Anxiety: An Interaction Model — the ~700-person survey on fermented food intake and social anxiety

New here? feelgoodery is your weekly space for feeling good without pretending everything's fine - nutrition, mindset, and real strategies for showing up for yourself, hosted by Kyle Buchanan (Broadcaster, Speaker, Certified Nutritional Practitioner, Resident Wellness contributor on Canada’s The Morning Show & host of The Exhale on SiriusXM) , and his live-studio dog Sam.

Disclaimer: This podcast is for informational purposes only and isn't a substitute for professional medical advice. If you're in a state of despair or depression, please reach out to a qualified mental health professional.

Follow along: Instagram @itskyleb | New episodes weekly

We live in a time where we've never had more tools to improve our health.

Wearables. Supplements. Peptides. Longevity clinics. Clean eating. Sleep trackers. AI-powered health advice.

But what if the pursuit of "optimal health" is actually making some of us less healthy?

Today, we're exploring where the line is between building healthy habits... and becoming trapped by them.

We're covering:

• The hidden downside of tracking every health metric
• When "clean eating" quietly becomes an unhealthy obsession
• Why perfect sleep might not always be worth chasing
• The surprising pressure behind today's sobriety movement
• How wellness products can sometimes disconnect us from what our bodies are really trying to tell us
• Why feeling your best doesn't require optimizing every moment of your life

Plus... today's feelgood thing.

If you've ever felt overwhelmed by wellness advice, biohacking, longevity trends, or the pressure to constantly improve yourself... this episode is for you.