How much BMI is malnourished? The link between BMI and undernutrition
                                
                                
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                                    1 min read                                
                            
                                According to the World Health Organization (WHO), a body mass index (BMI) below 18.5 is categorized as underweight and is often used as a key indicator for potential malnutrition. However, malnutrition is a complex condition, and while a low BMI is a significant red flag, it is not the sole diagnostic factor. This article explores the relationship between a low BMI and malnutrition, outlines the different levels of risk, and details other signs to watch for.