One Day MD | Evidence-Based Wellness

Modern life has made sitting unavoidable. Many people spend hours each day at desks, in cars, or in front of screens. But emerging research suggests that excessive sitting may independently increase the risk of heart disease, metabolic dysfunction, and premature death — even among people who regularly exercise. A major 2025 stud y published in the Journal of the American College of Cardiology analyzed nearly 90,000 adults wearing accelerometers and found that sedentary time above approximately 10.6 hours daily was associated with substantially higher risks of: Heart failure Cardiovascular death Atrial fibrillation Myocardial infarction (heart attack) Importantly, these risks persisted even among individuals meeting standard exercise guidelines.   The “Active Couch Potato” Problem Many people: Exercise for 30–60 minutes daily But remain sedentary for 8–12 hours afterward Researchers increasingly call this the: “Active couch potato” phenomenon The body appears...

For decades, longevity advice focused almost entirely on weight, BMI, and aerobic fitness . But a growing body of evidence now points to a far more powerful predictor of long-term health and survival: skeletal muscle mass and strength . Muscle is not just for movement or appearance. It is a metabolic, endocrine, and immune organ that plays a central role in glucose regulation, inflammation control, disease resilience, and functional independence. Losing muscle with age — a process known as sarcopenia — is strongly associated with frailty, chronic disease, hospitalization, and early mortality. In short: muscle is one of the most important assets you can build for a longer, healthier life. 1. Muscle Mass and Mortality: What the Evidence Shows Large population studies consistently show that people with higher relative muscle mass and strength live longer , regardless of body weight or fat mass. Key findings from epidemiologic and clinical research: Higher skeletal muscle mass is associa...

When Outlive: The Science and Art of Longevity dropped in March 2023, it instantly became the new bible of evidence-based longevity. Peter Attia MD — a former surgeon turned longevity obsessive who trains like an elite athlete, tracks every biomarker imaginable, and treats ultra-high-net-worth clients — laid out “Medicine 3.0”: stop waiting for disease to strike and instead aggressively prevent the Four Horsemen (atherosclerotic disease, cancer, neurodegenerative disease, and metabolic dysfunction). Two and a half years and millions of copies later, the book sales are still crushing it, the subreddit is thriving, and Attia just launched the official Outlive app. So here’s the real question in late 2025: Does Outlive still hold up? Short answer: It’s not just holding up — it’s aged like the finest rapamycin-treated mouse. Almost everything in the book is even more strongly supported today than in 2023. The core prescription remains the gold standard. But science moved fast in a few ar...