---
title: "Mental Fatigue on Keto Diet: Causes, Fixes, and Lab Tests"
description: "Mental fatigue on keto diet often comes from low sodium, under-eating, or sleep disruption during adaptation. Targeted labs available—no referral needed."
canonical: "https://www.vitalsvault.com/symptoms/mental-fatigue-on-keto-diet"
last-updated: 2026-08-22
---

# Mental Fatigue on Keto Diet: Causes, Fixes, and Lab Tests

> Mental fatigue on keto diet often comes from low sodium, under-eating, or sleep disruption during adaptation. Targeted labs available—no referral needed.

---

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