Have been trying to re-introduce possible offending ingredients after weeks on the Elimination phase of The FODMAP diet.
One culprit that I am very suspicious of is HFCS- have read that it is in many soft drinks, both diet and non-diet, but find it very confusing when reading the ingredient lists. It seems that in The UK it is not specifically listed but am wondering if it falls under the generic title of "Sweetener". There seems to be a lot of mixed information when I go onto the individual brand's website to check the ingredients. An example is Schweppes to see if it is in their tonic water- they don't mention it on their official site but HFCS is talked about a lot on other forums related to their product.
On a plus note, I can't believe how much better I have felt since going on The FODMAP diet, makes me remember what it felt like to have no stomach issues. I just wish this diet had been around years ago as it would have made my life a lot easier. I did mention it to my GP , when I enquired about having a lactose malabsorption test done and he told me that he had never heard of it. Also told me that he did not know if you could be tested for lactose malabsorption with a breath test- he even looked it up on google in front of me. Needless to say, none of these tests have been organised for me, not sure if I should pursue it any further. Maybe we are educating our GPs now!