difference, T = testosterone, DHEAS = dehydroepiandrosterone sulphate. One study found a
positive association between prostate cancer and plasma levels of bioavailable
testosterone (adjusted for levels of sex hormone binding globulin) [Gann et al 1996 J Natl
Cancer Inst 88: 1118-26] but another two studies did not [Heikkila et al 1999 Cancer 86:
312-15; Dorgan et al 1998 Cancer Epidemiol Biomarkers Prev 7: 1069-74]. One study found a
positive association between free testosterone (fraction not bound) and prostate cancer
[Carter et al 1995 Prostate 27: 25-31] but another two studies did not [Guess et al 1997,
Nomura et al 1996 Cancer Epidemiol Biomarkers Prev 6: 21-4, 5: 621-5].