3 Patients with tuberculosis face a condition characterized by decreased appetite, nutrient intake and micronutrient malabsorption resulting from the altered metabolic system of the patients, which is caused by the disease process. In turn, TB exacerbates undernutrition by increasing metabolic demand and decreasing appetite. ![]() Undernutrition weakens the human immune system and this can result in latent TB developing into active infection. Undernutrition and TB have a complex association. Illness can further result in decreased intestinal absorption. ![]() Individuals become undernourished when their diet does not provide them with adequate calories and proteins for maintenance and growth. Undernutrition is defined as a condition in which the nutrient and energy intake is inadequate to meet an individual’s needs to sustain good health.
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