Anorexic BMI Calculator
Compassionate screening tool evaluating body weight against DSM-5 anorexia nervosa severity categories. Calculates target healthy weight boundaries and offers supportive confidential resources.
Anorexic BMI Calculator
Clinical screening reference based on DSM-5 anorexia nervosa severity tiers.
Severe underweight state: Elevated risk of cardiac complications, electrolyte imbalance, and bone density loss.
Clinical Anorexic BMI Tiers: DSM-5 Severity Criteria & Medical Starvation Risks
Diagnostic criteria from the American Psychiatric Association (DSM-5) utilize Body Mass Index (BMI) tiers to classify the physiological severity of anorexia nervosa in adolescents and adults.
DSM-5 Severity Tiers for Anorexia Nervosa
Clinical severity classifications: Mild (BMI >= 17), Moderate (BMI 16 - 16.99), Severe (BMI 15 - 15.99), and Extreme (BMI < 15 kg/m²).
BMIs below 15 represent severe medical crises with imminent risks of fatal cardiac arrhythmias, electrolyte collapse, bradycardia, hypothermia, and refeeding syndrome upon food reintroduction.
Step-by-Step Instructions
Enter Standing Height & Current Weight
Input exact standing height and current body weight in metric (cm/kg) or imperial (in/lbs) units.
Specify Age & Biological Sex
Input age and sex for accurate CDC pediatric percentiles or DSM-5 clinical adult severity categorization.
Calculate Severity Index
Determine Body Mass Index (BMI) and evaluate clinical severity tiers under the DSM-5 criteria for Anorexia Nervosa.
Review Clinical Health Resources
Review critical clinical physiological markers and access accredited eating disorder support helplines (NEDA / ANAD).
Key Features & Capabilities
- DSM-5 (Diagnostic and Statistical Manual of Mental Disorders) Anorexia Nervosa BMI severity staging: Mild ($\ge 17.0$), Moderate ($16.0–16.99$), Severe ($15.0–15.99$), Extreme ($< 15.0$)
- CDC pediatric BMI-for-age percentile analysis for adolescents (< 5th percentile indicating clinical underweight)
- Percentage of Ideal Body Weight (%IBW) calculation based on the Devine clinical standard
- Immediate access to accredited eating disorder clinical support resources and helpline guidance
Frequently Asked Questions
What are the DSM-5 clinical BMI severity categories for Anorexia Nervosa in adults?
According to the American Psychiatric Association DSM-5 diagnostic criteria for adult Anorexia Nervosa: **Mild**: BMI ≥ 17.0 kg/m²; **Moderate**: BMI 16.0 – 16.99 kg/m²; **Severe**: BMI 15.0 – 15.99 kg/m²; **Extreme**: BMI < 15.0 kg/m². In children and adolescents, corresponding CDC BMI-for-age percentiles (< 5th percentile) are evaluated.
What is Percentage of Ideal Body Weight (%IBW) in clinical eating disorder assessment?
Clinicians calculate %IBW as: %IBW = (Current Weight / Ideal Body Weight) × 100. In hospital eating disorder treatment protocols: 90%–100% IBW is considered healthy; 80%–89% indicates mild malnutrition; 70%–79% indicates moderate malnutrition; and **< 70% to 75% IBW** typically warrants immediate inpatient medical hospitalization for stabilization.
What are the critical physiological warning signs of severe underweight malnutrition?
Severe caloric and weight restriction triggers multi-system medical complications: sinus bradycardia (< 50 bpm), hypotension (< 90/60 mmHg), hypothermia, orthostatic dizziness, lanugo (fine body hair growth), amenorrhea, severe electrolyte derangements (hypokalemia, hypophosphatemia), and cardiac QTc interval prolongation.
What is Refeeding Syndrome and why must nutritional rehabilitation be monitored medically?
Refeeding Syndrome is a potentially fatal metabolic complication that occurs when food is reintroduced too rapidly to a severely malnourished person. The surge in insulin causes rapid cellular uptake of phosphate, potassium, and magnesium, causing severe hypophosphatemia, cardiac arrhythmias, acute heart failure, and seizures. Nutritional restoration must be closely monitored by medical professionals.
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