I have heard from more than one source that taken with food glutamine is great for bodybuilders because it helps to build muscle. But taken on an empty stomach glutamine helps repair intestinal tissue.
According to Dr. Robert Atkins, the Atkins diet guru, not only is glutamine effective for healing the digestive tract, (which is what IBDers like us need), but that it also snuffs out cravings for sugar.
On page 168 in his book, 'Dr. Atkins' Vita-Nutrient Solution', he talks how glutamine "maintains the structural integrity of the intestines to such an extent that it is dubbed 'intestinal permeability factor.' No other nutrient is as important for gastrointestinal integrity."
But I stopped taking it after more recent studies such as what you listed above show that daily glutamine intake can be problematic. But after my most recent flare I found that taking some glutamine seemed to speed up recovery. That is why my signature says I take glutamine only when I feel gut repair is needed after a flare, not regularly at all.
Male, born 1951, DX IBD Feb08. No meds, allergic to Mesalamine. Food diary instead of SCD or Paleo.
When needed VSL#3DS sprinkled over powdered psyllium seed is very helpful.
Lactobacillus Reuteri (NCIMB 30242), Culturelle, Saccharomyces boulardii.
Fish oil, curcumin, extra D3, magnesium, multivitamin, glutamine when gut repair needed.
Resistant Starch and lots of fruit & vegetables (but no cruciferous), No Gluten, no soda, no HFCS, no xylitol or sorbitol, no trans fat, no shellfish, no carrageenan, no GMO foods saturated with Roundup.
Nature created all of the locks, therefore Nature has all of the keys