Since my experiments with probiotics and the gut turned out so well, I have been reading more on probiotics in general. Now, I have had problems with my gums for more than 30 years, lost a couple of teeth too in the process. The dentists keep telling me it is all my fault and that I have poor hygiene. You know, it is all the patient's fault obviously. But I can assure this is not true. So this time I had a try with oral probiotics (thanks to @Elph68 who had posted this.) I did not try what he recommended though as it was not at hand but I took another one : http://www.evoraoralprobiotics.com/evora-plus-oral-probiotic/ which contains "ProBiora3, a patented blend of three beneficial bacteria naturally present in healthy mouths, including Streptococcus oralis KJ3® (S. oralis KJ3), Streptococcus uberis KJ2® (S. uberis KJ2), and Streptococcus rattus JH145® (S. rattusJH145)". I am glad to report that after five days my gums are completely normal and I feel subtle changes in the sinuses, especially the right one. This means that I breathe increasingly from the right nostril, which all my life was a bit pinched (never blocked though). Knowing that this would severely affect the balance between the two sides of the nervous system , balance which is impaired in CF/CFS, I think it is worth bringing my results here! Every morning I play one Sudoku to evaluate my mental clarity. This has nicely progressed in just the five days. AND last night I received a phone call from a distant country that woke me up at 1:30 am. I spoke fluently for an hour in a language that I had not used for twenty years. In fact twenty years ago I spoke that language much less precisely and less easily than last night. ARGHH!!! Something is going on! Good luck to all. Asklipia This might be of interest to @adreno , @alicec , @anne_likes_red , @Gondwanaland , @jepps , @JPV ,@Lou , @Ripley @Sidereal , @Wayne sorry if I forgot others!