BMI (Body Mass Index) is a measure of body fat based on height and weight. A BMI of 17 is generally considered to be in the "underweight" category, but having a BMI of 17 alone does not necessarily mean that someone is anorexic. Anorexia nervosa is a complex mental health condition involving a distorted body image, an intense fear of gaining weight, and a persistent restriction of calorie intake that leads to severe weight loss.
While a BMI of 17 may indicate that someone is underweight, it's essential to consider other factors before making assumptions about their health or whether they have an eating disorder. Some people may naturally have a lower BMI due to their genetics and body composition, and they may not have an eating disorder. Others may have a low BMI due to other medical conditions or lifestyle factors.
To diagnose anorexia nervosa, healthcare professionals use specific criteria outlined in the Diagnostic and Statistical Manual of Mental Disorders (DSM-5). These criteria go beyond just looking at BMI and involve evaluating a person's attitudes towards their body, eating habits, and psychological well-being.
If someone is concerned about their weight, body image, or eating habits, or if others are concerned about their well-being, it's crucial for them to seek professional help from a healthcare provider, preferably one with experience in dealing with eating disorders. Early intervention and appropriate treatment can make a significant difference in recovery from eating disorders and associated health issues.