A person may be underweight due to genetics, improper metabolism of nutrients, lack of food (frequently due to poverty), drugs that affect appetite, illness (physical or mental) or the eating disorder<unk><unk> . Being underweight is associated with certain medical conditions, including type 1 diabetes, hyperthyroidism, cancer, and tuberculosis. People with gastrointestinal or liver problems may be unable to absorb nutrients adequately. People with certain eating disorders can also be underweight due to one or more nutrient deficiencies or excessive exercise, which exacerbates nutrient deficiencies.
symptom of Anorexia nervosa
symptom of Progeria
symptom of Somatization disorder
symptom of Opioid use disorder
symptom of Anxiety disorder
medical cause of Insomnia
symptom of Bipolar disorder
symptom of Narcolepsy