This video is from 2011 citing studies on the dangers of folic acid that is synthetic. The reason that GPs in the UK prescribe folic acid is because N.I.C.E. recommend it and its cheaper than folate.
Dr Ben Lynch explains the difference between Folic Acid and Folate.
https://mthfr.net/folic-acid-awareness-week-2014-want-awareness-here-you-go/2014/01/08/
https://youtu.be/oZzR1NMg0hM
Back to histamine again, Dr Ben Lynch has written an article on Histamine Intolerance, MTHFR and Methylation. Hence there is a link between bowel movement, folate and histamine.
