That moment when your nail catches on a sweater and splits—not with a dramatic crack, but a soft, almost apologetic tear. You sigh, reach for the nail file, and move on. Yet this small rupture may be more than bad luck. It’s often your body’s earliest, most visible plea for attention—long before fatigue, hair loss, or brain fog appear.
Nails, like hair and skin, are metabolic mirrors. Composed of layered keratin, they grow slowly (3 mm/month), making them sensitive barometers of nutritional status, hydration, and systemic balance. When they thin, peel, or splinter easily, it’s rarely just about polish or genetics. It’s physiology speaking in fragments.
What Weak Nails Reveal—And How to Respond
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