Marijuana smoking and tattoos are personal choices. What does the evidence really say about their health risks? In this episode, Dr. Manfred Stapff cuts through the myths, and delivers the science-backed truth about weed, ink, and your well-being. Using a major California study, he explains why cannabis users face a threefold higher risk of oral cancer and why the real story lies in understanding absolute risk and the "number needed to harm."  Dr. Manfred then turns to tattoos, uncovering a Swedish study that hints at a troubling link to lymphoma, and revealing how hidden metals and chemicals may linger in the body… Forever. See how evidence—not emotion—can shape better choices. Tune in to the full episode of Data, Decisions, and Danger: What Evidence Reveals About Tattoos and Cannabis. Dr. Manfred Stapff is an entrepreneurial biotech and pharmaceutical expert with deep expertise in real-world evidence and clinical research. As a seasoned leader, he brings decades of experience across all phases of drug development—from opportunity assessment to product launch. His work bridges science and strategy, ensuring medical decisions are grounded in accurate, meaningful data. Dr. Stapff is also an author, committed to promoting evidence-based thinking in medicine. His insights challenge misinformation and advocate for scientific integrity in today's data-driven world.   Connect with Dr. Manfred Stapff, MD: LinkedIn: https://www.linkedin.com/in/manfredstapff/ Website: https://candid-advisory

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