Any chronic viral infection, including HIV, will impact the endocrine system, too. And I've read that low T is prevalent among men with HIV. It would seem you need several doctors to work with to sort out the multiple issues/problems. Is this through the NHS or private doctors? My understanding, from talking with many people in the UK on different forums, is that for critical care medicine, the NHS is excellent, but primary care and specialists don't stray from the guidelines of the General Medical Council. I'm sure paying out of pocket for private medical consults/treatment is just as expensive in the UK as it is in the US.