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Glucose-galactose malabsorption is a rare disorder; only a few hundred cases have been identified worldwide. However, as many as 10 percent of the population may have a somewhat reduced capacity for glucose absorption without associated health problems. This condition may be a milder variation of glucose-galactose malabsorption. [2]
Lactose is a disaccharide sugar composed of galactose and glucose that is found in milk. Lactose can not be absorbed by the intestine and needs to be split in the small intestine into galactose and glucose by the enzyme called lactase; unabsorbed lactose can cause abdominal pain, bloating, diarrhea, gas, and nausea. [citation needed]
The only treatment for classic galactosemia is eliminating lactose and galactose from the diet (e.g. exclusion of dairy products containing lactose). [9] [20] [21] Lactose-restricted diet is efficient in resolving acute complications; however, it is not sufficient to prevent long-term complications affecting the brain and female gonads. [20]
The development of early cataracts in homozygous affected infants is fully preventable through early diagnosis and treatment with a galactose-restricted diet. Some studies have suggested that, depending on milk consumption later in life, heterozygous carriers of galactokinase deficiency may be prone to presenile cataracts at 20–50 years of age.
After the ingestion of lactose, most commonly from breast milk for an infant or cow milk and any milk from an animal, the enzyme lactase hydrolyzes the sugar into its monosaccharide constituents, glucose and galactose. In the first step of galactose metabolism, galactose is converted to galactose-1-phosphate (Gal-1-P) by the enzyme galactokinase.
Poor diet and malabsorption diseases (such as celiac disease) may lead to malnutrition of essential vitamins necessary for glycogen metabolism within the muscle cells. Malnutrition typically presents with systemic symptoms, but in rare instances can be limited to myopathy. [ 64 ]
“The Mediterranean diet emphasizes foods that are high in omega-3s, anthocyanins — a group of antioxidants — and other nutrients to support brain health and improve our cognitive function ...
A positive result may also be caused by small intestinal bacterial overgrowth, rather than lactose malabsorption. [7] Small intestinal bacterial overgrowth (SIBO) – the patient is either given a challenge dose of glucose, also known as dextrose (75–100 grams), or lactulose (10 grams). A baseline breath sample is collected, and then ...