Reading all over the net I find conflicting ideas about whether this could be an issue, and if it is positively or negatively associated with prostate cancer (my psa is low).
The reported normal range for SHBG is 16.5-55.9, and mine is 84.6.

Other hormones:
Insulin 3.3
Estradiol 8
IGF1 140
PSA .4
FSH 3
LH 1.8
TSH 1.8
Testosterone 588
Dhea-s 215.5
T4 Free, direct 1.5
a1c 5.1
SHBG 84.6

I've read that nettle root can bring it down. Dhea looks a little low, but I read that should not take dhea if shbg is high. I am not and have not taken anything that should affect my hormone levels.