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How Does BMI Relate to Anorexia Nervosa and What Constitutes Anorexic BMI?

Radhika Dadhich

Radhika Dadhich

Mar 13, 2024

Perex - The relation between Body mass index (BMI) and anorexia nervosa is significant but complex. Here’s a more comprehensive, detailed look into how BMI relates to this eating disorder, its limitations, and the requirement for a holistic treatment approach.

What is BMI?

Body Mass Index (BMI) is a straightforward calculation used to categorize people based on how much weight they have in relation to how tall (heights) they are. This tool allows medical personnel to quickly determine a person's weight classification, such as underweight, normal, overweight, or obese. 

What BMI is considered anorexia

Extreme underweight is often correlated to anorexia nervosa. Adults who have a BMI of less than 18.5 are recognized as underweight. An adult's BMI of less than 17.5 is generally taken into consideration when diagnosing anorexia nervosa. It is crucial to keep in mind that psychological factors, such as an extreme fear of becoming overweight and a distorted body look, are considered in addition to BMI during the diagnosis of anorexia.

Using BMI in Diagnosing and Monitoring Anorexia

BMI is a tool indicator used by medical professionals in order to diagnose and track anorexia nervosa. A very low body mass index (BMI) may specify anorexia, and it requires more testing. Positive change in BMI can reflect information about recovery and improvement in physical health as therapy progresses.

However, BMI is not perfect. It cannot distinguish between fat and muscle and ignores variations in each person's body structure. It also fails to take into account the psychological effects of anorexia. Therefore, a person with an eating disorder may have a "normal" BMI but still experience difficulties.

The Importance of a Comprehensive Approach

The limitation of BMI gives a clearer mindset that treating anorexia requires more than just getting someone back to a "healthy" weight. A comprehensive approach is important. Refer below practices for more understanding.

Psychological Support: Complex mental health issues are included in anorexia; thus, it is a significant approach. The fundamental causes of the situation can be effectively addressed in therapy, such as dissatisfaction with body shaping and fear of gaining weight.

Behavioral Interventions: These techniques can help limit unhealthy behaviors and adopt good eating habits. It is about developing new relationships with a fresh perspective on food and body image.

Medical Considerations: Anorexia can result in serious health complications, such as organ damage or malnutrition. In this context, medical attention may be required.

Conclusion

BMI alone is not enough to diagnose anorexia nervosa, even though it might offer helpful early suspects in a calculative way. Consideration beyond the calculation and considering the person's general well-being are essential aspects for understanding and treating eating-based disorders.

 

Beyond BMI: What Are the Alternative Methods for Assessing Health and Weight Status?

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