Look at your fingernails right now. Do you see vertical ridges, white spots, or a dark stripe? Most people cover these signs with polish, but as a doctor, I use them to diagnose serious internal diseases. Your nails are not just accessories—they are biological windows into your heart, liver, thyroid, and blood. In this video, I will teach you how to decode the 6 Urgent Signals your nails are sending about your health. We will analyze texture (ridges vs. pitting), shape (clubbing vs. spoon nails), and color to detect everything from anemia and thyroid dysfunction to lung disease and even cancer (melanoma). ⚠️ RED FLAG: Do you have a dark vertical stripe on your thumb? Watch until the "Oncology Alert" section immediately. I will explain the ABCDEF Rule to distinguish a harmless bruise from a dangerous tumor. 💅 ARE YOUR NAILS HEALTHY? Stop ignoring these symptoms! Learn my "Naked Nail" Protocol for self-diagnosis. Let me know in the comments: "I CHECKED MY NAILS TODAY!" ➡️ SHARE: Send this video to a friend who always wears acrylics or has brittle nails. You might help them catch a thyroid issue or anemia early! 🔔 SUBSCRIBE: Join the channel for more science-backed longevity and medical diagnostic tips to understand your body's secret language. 👍 LIKE: If you appreciate in-depth medical education that goes beyond beauty hacks, hit the like button!