Mind & Matter

Send us Fan Mail The science, hype, and unknowns surrounding popular peptides like BPC-157 & TB-500 ("Wolverine stack") for injury recovery & tissue repair. Nick & Dr. Flynn McGuire discuss the surge in peptide use for injury recovery. They cover peptide basics, the preclinical evidence for BPC-157 and TB-500, mechanisms like angiogenesis and tissue repair, the lack of robust...

Send us Fan Mail Biology of obesity resistance and factors influencing weight gain in humans and animals. TOPICS DISCUSSED: Historical views on obesity: In some cultures, like northern Africa or Stone Age societies, high body fat signaled status or attractiveness due to food scarcity, unlike today’s focus on leanness amid calorie abundance. Energy balance components: Metabolizable energy (95% abso...

Send us Fan Mail Mitochondria in human evolution, climate adaptation, maternal genetics, aging, and disease. TOPICS DISCUSSED: Endosymbiotic theory: Mitochondria arose from oxidative bacteria engulfed by archaea-like hosts, confirmed by phylogenetic analysis. Maternal mtDNA inheritance: Mitochondrial DNA is inherited from the mother, not the father. There are adaptive reasons for this. Haplogroups...

Send us Fan Mail Role of bile acids in cholesterol regulation, digestion & metabolic diseases like diabetes. TOPICS DISCUSSED: Bile acids basics: They enable cholesterol excretion, with about half of bodily cholesterol eliminated this way, and also aid digestion by emulsifying fats to increase enzyme access. Bile production & pathway: Synthesized in liver hepatocytes, bile flows via ducts...

Send us Fan Mail How the body's internal circadian clocks regulate metabolism, energy balance, and health. TOPICS DISCUSSED: Master circadian clock in the brain: Light detection via retina entrains the suprachiasmatic nucleus, which coordinates body-wide rhythms; intrinsic period slightly deviates from 24 hours, allowing seasonal flexibility. Peripheral clocks in organs: Nearly all cells have...

Send us Fan Mail Gene regulation through RNAs, the neurobiology of opioid addiction, and how psychedelics affect drug-seeking by modulating inflammation and plasticity. Not medical advice. TOPICS DISCUSSED: Gene regulation basics: DNA transcribes to RNAs, including non-coding types like microRNAs that inhibit mRNA translation into proteins, influencing up to 60% of the proteome. Non-coding RNAs in...

Send us Fan Mail The biology of fat tissue, estrogen's role in metabolism and health, and how exercise interacts with these processes, especially during menopause. TOPICS DISCUSSED: Adipose tissue basics: White fat primarily stores energy in large lipid droplets, while brown fat burns fatty acids for heat via high mitochondrial density; white fat can “brown” with exercise or certain foods lik...

Send us Fan Mail The brain's mysterious claustrum region, its role in cognitive flexibility, and how substances like alcohol and psychedelics affect neural circuits and behavior. Not medical advice. TOPICS DISCUSSED: Cerebral cortex structure: Described as a six-layered structure with pyramidal neurons and inhibitory interneurons; information flows between layers and regions to process sensor...

Send us Fan Mail Pharmacology & neurobiology of psychedelics & MDMA, focusing on isomers, sex-specific effects, and mechanisms in animal models. Not medical advice. TOPICS DISCUSSED: Biased agonism: Different drugs activate the same receptor (e.g., 5-HT2A) but trigger varied intracellular pathways, explaining why LSD is psychedelic while similar lisuride is not. Enantiomers & isomers:...

Send us Fan Mail The AMP kinase pathway's role in cellular energy sensing, nutrient allocation, and its connections to health practices like fasting, exercise, and diet. TOPICS DISCUSSED: Cellular energy basics: ATP/ADP/AMP as energy currencies; AMP kinase activates on low ATP to conserve and redirect resources, like a budget manager. AMP kinase mechanics: Heterotrimeric enzyme phosphorylatin...

Send us Fan Mail How industrial farming, seed oils, soy, and pesticides impact food nutrition and health. Not medical advice. TOPICS DISCUSSED: Soy’s rise in farming: Originating from paint uses and wartime chemicals, soy became dominant due to subsidies and large-scale farming practices, but introduces high PUFAs, phytoestrogens, and pesticides into animal feeds. Feed’s impact on eggs: Chicken fe...

Send us Fan Mail How individuals vary in responses to carbs, fibers, and fats. TOPICS DISCUSSED: Personalized health profiling: Snyder’s lab sequences genomes and measures molecules from blood, urine, and microbiomes to detect diseases early, emphasizing data-driven discovery over assumptions. Fiber variations and effects: Responses to dietary fibers vary individually, with microbiome playing a ke...

Send us Fan Mail How agricultural practices influence the nutrient density of foods, particularly meat, and the importance of hidden compounds beyond standard nutrition labels. TOPICS DISCUSSED: Nutrient density profiling: Labs analyze thousands of compounds beyond macros and vitamins; this “dark matter” includes phytonutrients that may support health despite not being essential. Phytonutrients in...

Send us Fan Mail Cellular metabolism, mitochondrial health, and the roles of diet and environment in metabolic health, fetal & child development, and Alzheimer's. TOPICS DISCUSSED: Cellular growth vs. burning: Cells alternate between growing (using glucose for building blocks in low-oxygen environments) and burning (generating ATP in mitochondria with oxygen); dysregulation leads to metab...

Send us Fan Mail Deep dive into how ketogenic diets and carbohydrate intake effect exercise performance, and misconceptions in sports nutrition. TOPICS DISCUSSED: Insulin as a powerful metabolic hormone: regulates nutrient storage across tissues, overriding others like glucagon to promote fat and glucose storage during abundance. Glucagon & GLP-1 roles in metabolism: Glucagon mobilizes liver g...

Send us Fan Mail Neurobiology of maternal care in mammals: hormonal influences, stress effects & a study on psilocybin's unexpected effects during the postpartum period. Sponsor: SporesMD . Use code TRIKOMES for 20% off pharmaceutical-grade mushroom liquid cultures & mycology products. Topics Discussed: Maternal care behavior in rodents: Nursing, pup retrieval, grooming, and nest-buil...

Send us Fan Mail Metabolic effects of soybean oil and linoleic acid on obesity, fatty liver, and liver function. Topics Discussed: Historical trends in soybean oil use: Consumption increased dramatically since the 1960s due to farming subsidies, now providing over 10% of calories for many Americans, far exceeding the 1-2% required biologically. Soybean oil’s effects in mice: Diets with 8-10% linol...

Send us Fan Mail How seasonal changes in light and dietary unsaturated fats affect circadian rhythms in mammals. Topics Discussed: Evolutionary context of circadian rhythms : All organisms have adapted to Earth’s 24-hour day for survival, with internal clocks slightly offset and adjusted by environmental cues. Molecular clock mechanism: Involves a feedback loop where proteins turn on/off genes, la...

Send us Fan Mail How ketosis and ketogenic diets work and how these tools can improve metabolic health, brain function, and even cancer management. Topics Discussed: Organs have different fuel preferences: brain strongly prefers glucose, heart prefers fatty acids, skeletal muscle is flexible and likes fat/ketones. Humans evolved with high metabolic flexibility; regular ketosis was normal for ances...

Send us Fan Mail How dietary polyunsaturated fats, especially omega-6 from seed oils, influence inflammation & heart health. Topics Discussed: Polyunsaturated fatty acids (PUFAs): Omega-6 from seed oils like safflower and corn can convert to pro-inflammatory molecules, while omega-3s produce resolving ones; imbalance biases toward chronic inflammation. Inflammation regulation: Acute inflammati...

Send us Fan Mail Methods & challenges of establishing causal relationships in health research, emphasizing epidemiology, randomized trials, and genetic approaches. Topics: Epidemiology: Studies disease influences using observational designs like case-control and prospective cohorts, plus trials, to identify patterns and test hypotheses. Hierarchy of evidence critique: Rejects rigid pyramids fa...

Send us Fan Mail Integration of brain metabolism with neural signaling, highlighting how core metabolites regulate energy use and protect neurons. Topics Discussed: Brain energy efficiency: Brains are much more energy-efficient than computers for similar processing, relying on adaptive metabolic strategies evolved under energy scarcity. Metabolism vs. information processing: Core metabolites like...

Send us Fan Mail Mitochondrial fatty acid synthesis is a little-known but essential pathway that supports energy production and metabolic health. Summary: Dr. Sara Nowinski explains how mitochondria not only burn fuels to make ATP but also synthesize their own fatty acids inside the matrix; this conserved pathway produces lipoic acid (an essential enzyme cofactor) and longer-chain fats required fo...

Send us Fan Mail How internal states like hunger and hormones shape instinctive behaviors, particularly parental care Episode Summary: Dr. Johannes Kohl explains instinctive behaviors in mammals, emphasizing how states like hunger and hormonal cycles modulate actions such as parental care; they discuss hypothalamic circuits, hormone integration, and pregnancy-induced brain changes, highlighting th...

Send us Fan Mail How mitochondria travel between cells and how this hidden communication shapes metabolism, immunity, and even potential therapies. Episode Summary: Dr. Jon Brestoff talks about mitochondrial dynamics inside cells, their transfer between unrelated cells (distinct from inheritance during division), and its roles in adipose tissue communication, macrophage cleanup, and systemic metab...