---
title: "Brittle Nails in Men: Causes, Fixes, and Lab Tests"
description: "Brittle nails in men usually come from iron or thyroid issues, low protein, or repeated wet-work damage. Targeted labs available at Quest—no referral."
canonical: "https://www.vitalsvault.com/symptoms/brittle-nails-in-men"
last-updated: 2026-08-22
---

# Brittle Nails in Men: Causes, Fixes, and Lab Tests

> Brittle nails in men usually come from iron or thyroid issues, low protein, or repeated wet-work damage. Targeted labs available at Quest—no referral.

---

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