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Weight at BMI 17.5
A BMI below 17.5 is one clinical marker used when assessing anorexia. BMI alone does not diagnose an eating disorder. If you or someone you know is struggling, please talk to a doctor or a trusted person — help is available.
Frequently Asked Questions
What BMI is considered anorexic?
A BMI under 17.5 is commonly cited as a threshold in assessing anorexia nervosa, but it is only one factor. Diagnosis requires a qualified health professional who considers behaviour, history and physical health.
Where can I get help?
Eating disorders are serious but treatable. Please reach out to a doctor, a mental-health professional or a trusted person. You do not have to face it alone.
Check your BMI against the 17.5 threshold sometimes used when assessing anorexia. Informational only, not a diagnosis.