malabsorption

n. poor absorption, improper absorption (of food by the body)

Malabsorption is a state arising from abnormality in digestion or absorption of food nutrients across the gastrointestinal(GI) tract. Impairment can be of single or multiple nutrients depending on the abnormality. This may lead to malnutrition and variety of anaemias.Some prefer to classify malabsorption clinically into three basic categories: (1) selective, as seen in lactose malabsorption; (2) partial, as observed in a-Beta-lipoproteinemia, and (3) total as in celiac disease.
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Malabsorption /mal·ab·sorp·tion/ impaired intestinal absorption of nutrients. mal·ab·sorp·tion n. Defective or inadequate absorption of nutrients [more]Malabsorption - Community and Resources

Noun
1. abnormal absorption of nutrients from the digestive tract
(hypernym) assimilation, absorption

Poor intestinal absorption of nutrients.