Underweight

Condition characterized by a body weight that is considered too low to be healthy, typically defined using the Body Mass Index (BMI) with a value of less than 18.5. Being underweight can result from various factors such as nutritional deficiencies, medical conditions, mental health issues, or genetics, and it poses health risks including weakened immune system, osteoporosis, and fertility issues. This condition primarily affects individuals who may have underlying health issues, poor dietary habits, or genetic predispositions.