Re: Diagnosed: Fructose Malabsorption; some questions, including weight loss issues
06/02/11 12:04 AM
Losing weight in fructose malabsorption (FM) may be caused by avoiding eating and/or chronic diarrhea with the resulting loss of nutrients. You don't mention diarrhea, though.
Other less commonly mentioned symptoms in FM, such as brain fog, fatigue or headache, might be caused by dehydration or nutrient (iron, zinc?) deficiences caused by diarrhea, or SIBO.
Disorders, such as lactose intolerance (more likely causing diarrhea than constipation) or SIBO, could be present either as a cause or result of FM. FM can be a complication of a celiac disease; in this case you would probably have problem with wheat and other gluten-containing foods.
Intestinal parasites may cause weight loss and nutrient deficiences with various symptoms, including yours. I mentioned this since you mentioned traveling.
You may want to discuss with your gastroenterologist about SIBO and intestinal parasites.