Dr RR Baliga's "Got Knowledge Doc" Podkast

🧬 Can we rejuvenate the aging immune system? A new Nature Aging trial suggests we might be closer than we thought.   In 50 healthy adults aged 45–70, urolithin A —a mitophagy activator—improved immune fitness over just 28 days: ✅ ↑ naïve CD8⁺ T cells ✅ ↓ exhaustion markers (TOX) ✅ ↑ mitochondrial biogenesis (PGC-1α) ✅ ↑ fatty-acid oxidation capacity ✅ ↑ NK cell and monocyte function ✅ ↑ bac...

🫀 Personalizing DAPT: When "One Size Fits All" Fails 🕊️💊   The HOST-BR trial in The Lancet offers an important clinical lesson: Bleeding risk should guide antiplatelet duration after PCI — not habit, not inertia.   🔍 Key insight   In ARC-HBR patients, 1-month DAPT was not non-inferior to 3 months In non-HBR patients, 3-month DAPT was non-inferior to 12 months and reduced bleeding     🧠 Clinica...

🚨 New Pharmacotherapy for Obstructive Sleep Apnoea 🌙💊 In a landmark Phase 2 trial published in The Lancet , sultiame— a carbonic anhydrase inhibitor—showed dose-dependent reduction in AHI and improved nocturnal oxygenation in adults with moderate–severe OSA.   💡 Key insights: • 298 participants across 5 European countries • 200 mg daily delivered the best efficacy-to-tolerability balance • Ben...

  📢 New Study Alert 🩺💊 In JAMA Internal Medicine, a national analysis reveals that using the PREVENT risk calculator (vs Pooled Cohort Equations) dramatically reduces the number of U.S. adults aged 40–59 eligible for aspirin in primary prevention of cardiovascular disease. Among 7.6 million current aspirin users, >96% wouldn't qualify by PREVENT 🤯. Time to rethink our calculators and consider...

🧠 TACSI Trial in NEJM (Sep 2025) challenges the status quo on dual antiplatelet therapy after CABG for ACS! 👨‍⚕️ 2201 patients across 5 Nordic countries 💊 Ticagrelor + Aspirin ≠ better outcomes vs Aspirin alone 📉 No reduction in death, MI, stroke, or revascularization 🩸 But bleeding (4.9% vs 2.0%) & dyspnea (18.2% vs 6.4%) increased 📚 Guidelines may need rethinking.   📖 Jeppsson A et al. N...

🧪 NEO-MINDSET Trial 🇧🇷 published in NEJM asks: Can we safely drop aspirin early after PCI in acute coronary syndromes (ACS)?   💊 Monotherapy with ticagrelor/prasugrel reduced bleeding 🩸 but increased early ischemic events 💥 vs dual antiplatelet therapy (DAPT). ❗ Noninferiority for major adverse cardiovascular events was not met .   🔍 DAPT still stands tall in early post-PCI ACS care. Kudos t...

🚨 New in NEJM — The ALASCCA Trial 🧬 Low-dose aspirin (160 mg/day) reduced colorectal cancer recurrence in patients with PIK3CA , PIK3R1 , or PTEN mutations 🎯   ✅ 3-year recurrence: 7.7% (aspirin) vs 14–17% (placebo) ✅ Group A HR : 0.49 | Group B HR : 0.42 ✅ NNT as low as 6 in stage III rectal cancer 💥 ⚠️ Slight increase in adverse events   🧠 Editorial calls it a new standard of care : 🔬 G...

💡 TARGET-FIRST trial (NEJM, Aug 2025) shows that in low-risk AMI patients post-PCI with complete revascularization, stopping aspirin after 1 month and continuing P2Y12 monotherapy is noninferior to dual antiplatelet therapy— with 54% fewer bleeding events 🩸🛑💊   ⚖️ A modern, patient-tailored antiplatelet strategy—backed by potent P2Y12 inhibitors and smart selection—might just be the new norm i...

💡 "Cogito, ergo sum" — I think, therefore I am. René Descartes laid the foundation of modern Western philosophy and scientific reasoning, linking algebra to geometry, and mind to body.  🧠📐 His legacy reminds healthcare professionals to unite  reason with compassion — science with soul. ❤️⚕️

💊🫀 Aspirin in the Crosshairs? The AQUATIC Trial (NEJM, Aug 2025) raises sharp questions on dual-pathway therapy in chronic coronary syndrome (CCS) patients already on long-term anticoagulation. 📉 Adding aspirin led to: • ↑ Ischemic events (HR 1.53; P=0.02 ) • ↑ Mortality (HR 1.72; P=0.01 ) • ↑ Major bleeding (HR 3.35; P

🧠💥 Could lead poisoning have helped shape human evolution? A bold new hypothesis suggests that Homo sapiens may have survived while Neanderthals and Denisovans vanished—thanks to genetic defenses against environmental lead. 🧬   By analyzing fossil teeth 🦷 and testing brain organoids 🧪, researchers found that ancient lead exposure disrupted key language-related genes (like FOXP2 )—but not in m...

🚨 New in Nature 🧬: Groundbreaking study reveals how HMGN1 , a dosage-sensitive epigenetic regulator on chromosome 21, reprograms atrioventricular cardiomyocytes into a ventricular fate—driving congenital heart defects in Down syndrome 💔🫀.   Using hiPSCs , single-cell RNA sequencing , and a CRISPRa CROP-seq screen , researchers pinpoint HMGN1 as a causal gene. Strikingly, reducing its dosage in...

🚭 Lung Cancer in Nonsmokers – a hidden epidemic affecting up to 20% of global cases 🌍. Unlike tobacco-related disease, this form often strikes younger, female, and Asian populations, with EGFR and ALK mutations driving tumors 🔬.   Despite low mutation burden and no smoking history, these patients benefit immensely from targeted therapies like osimertinib and lorlatinib 🎯. Yet, there's no USPST...

👟 Just 2 Days Can Make a Difference! 🧓📉 In a large cohort of 13,547 older women (mean age 72), walking ≥4,000 steps/day on even 1–2 days/week was linked to a 26% lower mortality and 27% lower cardiovascular disease risk 💥. Those walking ≥3 days/week had even greater benefits ! 📉 Higher step thresholds (up to 7,000/day) showed further mortality reduction—but step volume , not frequency, drove...

🧓 Aging skin, fading flow. This 2025 Nature study uncovers how dermal capillary-associated macrophages (CAMs) decline with age—preceding microvascular dysfunction and impaired blood flow. 🧬 Using intravital imaging and macrophage fate mapping in mice (and validating in humans!), the authors reveal that CAMs are  not replenished unless triggered by injury or CSF1. 🛠️ Fascinatingly, local CSF1–Fc...

🫀📉 Published in The Lancet (Oct 22, 2025): SELECT trial investigators report that semaglutide reduced MACE by 20% in patients with obesity but without diabetes— independent of weight loss . Waist circumference, not weight, tracked with outcomes, yet explained only 33% of the benefit. This landmark analysis redefines GLP-1RAs as disease-modifying agents , not just weight-loss drugs. 👉 Read here:...

Hair Loss in Women" (The New England Journal of Medicine 2025; DOI 10.1056/NEJMcp2412146) 📄 , and it's a must‑listen for anyone in clinical practice or research. The piece highlights that  female‑pattern hair loss increases with age and is closely tied to hormonal status , and that treatments span from topical 5% minoxidil or low‑dose oral minoxidil to anti‑androgens and adjunctive non‑drug appro...

🔍 New in The Lancet! A massive network meta-analysis of 94 RCTs (105,435 patients) reveals that antidepressants impact far more than mood 🧠—they alter weight ⚖️, glucose 🩸, BP 💓, lipids 🧬, and liver enzymes 🧪 . Agomelatine 🌙 may lower weight, while nortriptyline 📈 raises heart rate. Time to rethink side-effect profiles when prescribing! 📚 Pills, Pressure, and Physiology — catch the full s...

🧬 Her Genes, His Risk, Our Mind 💡 New insights from Thomas et al., Nature Communications (2025) — summarized beautifully by Na Cai in Nature News & Views . Women carry a heavier polygenic burden for major depressive disorder (MDD) , with ~6,000 female-specific variants and stronger genetic links to metabolic traits like BMI and metabolic syndrome. 🧠   Men show a unique X-chromosome signal ( IL1...

🦷🫀 New Findings Linking Oral Health to Heart Attacks! 🧬🧫 Groundbreaking research in JAHA reveals that viridans streptococci , common oral bacteria, form biofilms in atherosclerotic plaques that evade immune detection . These stealthy invaders trigger  innate and adaptive immune responses , correlating with plaque rupture, myocardial infarction, and sudden cardiac death . The study combines  au...

🧠 Why Does Alzheimer's Affect More Women Than Men?   New insights from JAMA Medical News reveal that the answer goes far beyond longevity. 🌸 Biology, hormones, and even social factors intertwine — from estrogen decline and X chromosome genetics to APOE4 risks and underdiagnosis due to stronger verbal memory .   Women make up two-thirds of all Alzheimer's cases, yet most clinical trials overlook...

🚨 New Study Alert 🕒 Can when you eat improve how you feel? This open-label pilot study shows that Time-Restricted Eating (TRE) — limiting food intake to an 8–10 hour window — significantly improved: ✅ Quality of Life (↑ SF-36 & ↓ MAPS scores) ✅ Orthostatic Heart Rate (↓ by 11 bpm, p < 0.0001) ✅ Mitochondrial ATP production (↑, p < 0.05) TRE may offer a safe, feasible, and non-pharmacological...

🌟 Guru Nanak (1469–1539 CE): The Voice of Oneness & Compassion 🌟   From Ik Onkar (One God) to Seva (selfless service), Guru Nanak's message transcends faith — reminding us that true spirituality lies in equality, honesty, and compassion. 🕊️ His principles — Naam Japo (meditate), Kirat Karo (work honestly), Vand Shhako (share with others) — continue to inspire communities and caregivers alike. 👩...

🚨 New Study Alert 🩺 Think you're low-risk? Think again. This MESA study shows that even "low-risk" individuals may harbor hidden coronary artery calcium (CAC) — and it matters.   📈 Adding CAC scoring significantly improved ASCVD risk prediction, reclassifying up to 18% into statin-eligible groups.   🧠 Implication? Precision prevention may start with a scan.   🔗 Read in American Journal of Pre...

🧬 Cellular senescence is more than just a marker of aging — it's a key driver of ❤️ cardiovascular disease . From the p53/p21 and p16/Rb axes to mTOR, SIRT1/6, NF-κB, and ROS/DDR, these molecular pathways halt cell division, fuel inflammation 🔥, and impair cardiac repair. Emerging data spotlight the roles of 💣 SASP, 🧓 senescent MSCs, and 🎯 microRNAs in accelerating vascular aging. Time to ret...