The cure, by the way, is the elimination of almost all fibre, absolutely all grains and a marked reduction of carbohydrate consumption. She initially ate 20g/d of carbohydrate but currently anything under 70g/d seems fine for maintenance. Some people have to go a little further and eliminate starches and unfermented dairy too, but that wasn't needed in my friend's case. Grain ingestion, especially wheat, causes an immediate flare. No wonder the high fibre diet was a disaster.posted by callmejay at 5:28 PM on July 16, 2012
So what is the link between IBS, opioids and especially grains?
Our bodies manufacture many short polypeptides for use as neurotransmitters. One specific group of them are the endorphins. These are naturally produced to control many biological processes. Gut motility and the limitation of both physical and emotional pain are two major functions under endorphin control. Morphine-like drugs, including its diacetylated derivative heroin, drop on to endorphin receptors and produce constipation and happiness. Withdrawl does the opposite. Badly.
Endorphins are produced by ourselves. Exorphins are similar peptides produced from our diet. Partially digested gluten from wheat is a major source. Eating a high gluten diet produces lots of exorphins. Constipation, often after an initial spasm reaction, is the result, just as it is from heroin. And pain too, because although exorphins do reach the brain, they never get there in the quantity needed to produce pain relief or happiness. In fact depression is common in IBS patients, but then chronic severe pain coupled with totally wrong advice tends to lead to depression!
When an IBS patient eventually has a bowel movement there is an immediate removal of the exorphins in contact with the gut wall. Acute opioid withdrawl produces diarrhoea. Remember the opening scenes of Trainspotting, with the methadone suppository and the worst public lavatory in Scotland?
So IBS is a functional problem of constipation with gut spasm alternating with diarrhoea. Eating grains is the commonest trigger. Wholegrains are the worst! Try telling that to your doctor.
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posted by Earl the Polliwog at 11:30 AM on July 16, 2012