An underweight person is a type of person whose body weight is considered too low to be healthy.
Underweight people have a body mass index oh under18% or a weight 15% to 20% below that normal for their age and height group.
- Family history
- A high metabolism
- Physical illness or chronic disease nausea diarrhea vomiting
- Decreased appetite cancer thyroid disorder chronic diseases ulcerative type DM TB
- Mental Illness depression anxiety anorexia bulimia obsessive compulsive disorder
- Drug use
- Lack of food nutritional deficiency
- Metabolism
- Genetic
- Fragile bones
- Irregular menstrual periods problems getting pregnancy
- Hair loss
- Weak immune system
- Dizziness
- Fatigue from anemia
- Poor growth development