I'm no expert, but it seems like some is better than none. Like walking before you run. It shows the parts are working, even if they aren't up to full speed. And, regular workouts help improve conditioning.
How's that for a G-rated answer?
Diagnosis at age 53. PSA 2007 about
2; PSA 2008 4.3
Biopsy September 2008: 6 of 12 cores positive; Gleason 4+3 = 7
CT and Bone scan negative
Da Vinci surgery at City of Hope December 8, 2008
Radical prostatectomy and lymph node dissection
Catheter out on 7th day, replaced on 8th day, out again 14th day following negative cystogram
Pathology: pT2c; lymph nodes negative; margins involved; 41 grams, 8% involved by tumor; same Gleason 4+3=7
PSA 1/22/08 non-detectable! 8-)
4/23/09, 07/30/09, Oct 2009 still undetectable!