For many years, I blamed weak, gassy German beers for making me alcohol intolerant.
This month, I have been suffering burning pains in my digestive system as a result of http://www.nhs.uk/Conditions/Irritable-bowel-syndrome/Pages/Introduction.aspx.
This condition usually has its onset in the 20 to 30 year age group, during that time I spent three years in the RAF, in Germany.
I cannot prove what I am saying but I can tell you that since I returned in 1979, I haven't had a pint of beer because my system won't absorb the alcohol.
I wonder how many other ex-servicemen have had the same effects?