Anorexic BMI Calculator
Screen for underweight risks and potential indicators of Anorexia Nervosa. This tool focuses on the lower end of the BMI scale to help assess severity of thinness.
About Anorexic BMI
This calculator is designed to screen for underweight classifications often associated with eating disorders like Anorexia Nervosa. Unlike a standard BMI calculator that focuses on obesity, this tool highlights the severity of thinness based on World Health Organization (WHO) and ICD-10 criteria.
Medical Disclaimer
This tool is for informational purposes only. A low BMI is just one indicator of Anorexia Nervosa and does not constitute a medical diagnosis. Eating disorders are complex mental health conditions. If you or someone you know is struggling, please seek professional help immediately.
BMI Thresholds for Anorexia
While diagnostic criteria vary (DSM-5 no longer specifies a strict BMI cutoff), the following BMI ranges are often used clinically to assess the severity of malnutrition:
- Mild: BMI ≥ 17
- Moderate: BMI 16 - 16.99
- Severe: BMI 15 - 15.99
- Extreme: BMI < 15
Health Risks of Being Underweight
Being significantly underweight can lead to serious health complications, including:
- Weakened immune system
- Osteoporosis and bone fractures
- Fertility issues and amenorrhea (loss of periods)
- Heart problems and low blood pressure
- Chronic fatigue and muscle weakness
If your BMI falls into the risk categories, it is crucial to consult with a doctor or dietitian to ensure you are receiving adequate nutrition. For a general health assessment, you can also use our standard BMI Calculator.
? Frequently Asked Questions
Historically, a BMI below 17.5 was a diagnostic criterion for Anorexia Nervosa. However, modern diagnosis (DSM-5) focuses more on behavioral symptoms and restriction of energy intake relative to requirements, rather than a strict number.
Not always. A person can have 'Atypical Anorexia' and be in a normal or overweight BMI range while still suffering from severe malnutrition and dangerous eating behaviors. BMI is just one physical marker.
If your BMI is below 17.5, you are considered underweight and may be at risk for health complications. We strongly recommend speaking with a healthcare provider to rule out underlying conditions.