Weight Loss (Unintentional)

Investigation of unexpected weight loss.

Reviewed by Dr Kola Tytler MBBS CertHE MBA MSt MRCGP (General Practitioner)

Last reviewed: 21 October 2025

General PracticeOncologyGastroenterology

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Clinical Guidelines

Assessment of unintentional weight loss

CKS: Adult malnutrition

ESPEN guidelines on definitions and terminology of clinical nutrition

NICE guideline [NG12]: Suspected cancer: recognition and referral

NICE guideline [NG84]

Diagnostic criteria for malnutrition – An ESPEN Consensus Statement

Diagnostic criteria for malnutrition–An ESPEN Consensus Statement