I know they get bad press and did consider not posting at all. All I can say is that its worked for me. I have not heard of it being banned but know it is widely used in Germany.
My story is - I had no energy - and I mean NONE - couldn't even walk up the stairs without stopping for a rest. Changing the bedlinen would require getting INTO bed afterwards.
I also suffered aching muscles (even when I hadn't done any exercise), headaches, spots, v painful bloating and cramping, constipation and/or diarhoea (sp?), sore throat, ear ache, weight gain no matter what I ate/exercise I did, constant sneezing and cattarh (sorry, can't spell)
Following the BER test I cut out yeast sugar and dairy for 2 months, lost a stone, had boundless energy, no more bloating, stomach cramps - I looked and felt so good people were convinced I had that 'glowing pregnancy' look.
It worked for me, that is about the best I can say!