What classification is applied to individuals with a Body Mass Index (BMI) under 18.5?

Individuals with a Body Mass Index (BMI) under 18.5 are classified as underweight. This classification is based on the World Health Organization (WHO) BMI categories which categorize body weight relative to height to assess whether a person is underweight, normal weight, overweight, or obese.

A BMI less than 18.5 indicates that a person may have insufficient body weight for their height, which can be associated with potential health risks such as nutritional deficiencies, weakened immune function, and other health complications. Recognizing this category is essential for health professionals in order to provide appropriate guidance and interventions to help individuals reach a healthier weight if necessary.

The other classifications, such as obese, overweight, and healthy weight, pertain to higher BMI ranges and do not apply to those with a BMI under 18.5. Understanding these classifications is crucial for accurately assessing and addressing weight-related health concerns.