First of all, I'm very sorry for your diagnosis. We are only 7 years apart and I had a similar experience. I am also a very healthy male other than prostate cancer. I will apologize for this lengthy reply but I think more information is better than less when it comes to issues of cancer. If you are like me, you will go through times of mourning the loss of your health. But there are a lot of options for you, based on the early stage you have described. And Because I have just gone through the journey you have begun, I can tell you, there is great hope for a recovery from this disease with little to possibly no side effects.
I don't want to ever minimize the gravity of being diagnosed with cancer but I truly believe that in my case, because of the treatment I chose, (and potentially in your case too) cancer can almost be a non-issue. Yep, I have that much optimism for early diagnosed cases.
So, based on my experience here are my suggestions. First, based on the information you provided, you have time to think this through. Don't make any quick decisions. Only decide on a course of action AFTER you have done your homework. Give yourself several months (maybe even longer) before you make a final decision. (It was 5 months before I decided on my course of action.)
Personally, I don't think you have all the information you need yet. I would suggest requesting (insisting on) a 3T MRI to determine if there are any other areas of concern. (Your biopsy was random. This means the urologist may or may not have found all the areas of cancer.). I don't mean to be a Debbie Downer, but we are talking about your prostate, your quality of life, and your life period! My first urologist misdiagnosed my symptoms and said I don't have cancer. His recommendation was to do the greenlight laser and in his words, I will be Peeing like a 16-year-old again. It was only through my own due diligence and seeking a second opinion that (sadly) it was discovered I actually did have cancer. QUESTION EVERYTHING!!!
Next, if I were you, I would ask where the cancer is located. Even though it's a low-grade and contained in the prostate, you need to know if it is located near the transitional zone, seminal vesicles, or other areas with a higher probability to spread. If it's not, then active surveillance is a very good temporary choice for you and I would give it strong consideration.
I'm personally not a big fan of active surveillance because the more the cancer grows, the less options you will have down the road. Also you will most likely have to have PSA tests every 3-6 months and biopsies probably every 18 months. My personal opinion is biopsies (ripping out cores of flesh) are not healthy for the prostate and potentially increases the chances of cancer spreading through releasing cancer cells and needle tracking. Although there are no (known) studies to document this. (They will never document this for obvious reasons.) Urologist actually like active surveillance because they continue to make money on their patients doing multiple PSA tests and biopsies and still eventually end up performing surgery. So for them, it's like milking a cow until the big payout. (There was a well-known urologist who was on TV and admitted this). (However, that doesn't mean AS is a bad choice.)
Two great advantages of active surveillance iare it will let you live a normal life sexually and from a urinary perspective and it will let you delay taking any "more aggressive/invasive" type action. This is a huge benefit as more and newer options to treat cancer are becoming available with much less to no severe side effects that are associated with radical prostatectomy, radiation, and some of the other options that are out there.
Just know that each of the physicians you talk with will most likely recommend the procedure they perform and will suggest it's "best" for your situation. That's because that's the procedure they perform and they believe in it (and there's nothing wrong with that) but YOU ultimately must decide (down the road) which procedure is best for you based on what is most important to you. Each man must make his own choice.
Prostatectomy has severe side effects immediately (it even makes your penis shorter but they won't tell you that unless you ask) and even though you can recover from most of the other side effects, sex and incontinence is never the same or as good again. Radiation therapy has similar severe side effects but they come on typically five or more years down the road (and they are not reversible, they just keep getting worse (after radiation therapy of any type). Don't let anyone tell you differently.
So,
1. Get a 3T MRI to make sure you don't have additional "Areas of concern." Knowledge is empowerment!
2. Make sure the cancer is not in areas more likely to metastasize.
If there are no other areas of concern and the cancer is not likely to spread then AS is probably a good option for you.
If the cancer has a higher probability of metastasizing, then please do your homework. Also two options that urologist and radiologist won't tell you about are FLA, (Focal laser ablation) and HIFU, (High intensity focused ultrasound).
My situation is very similar to yours with a Gleason score of six and only one core (actually ended up with 2 cores) with cancer of only 5%. But because of the location, the probably metastasizing was high so I chose to move forward with HIFU. I am in the recover stage now after the procedure. (They were also able to treat my prostate for BPH and potentially reduce some of the urinary problems associated with BPH. (On this forum, do a search on "HIFU EXPERIENCE" (if you want to know more) as I have offered great detail regarding my procedure, both on my progress and setbacks throughout my journey. I'm not advocating HIFU is right for you or anyone else. But I am very happy and, more importantly, at peace with my decision. I whole heartedly believe this procedure can be a "game changer" for many men diagnosed with early Prostate cancer.
I'm not a fan of radiation therapy but if someone were to go down that road, I would recommend checking out proton radiation therapy not photon radiation therapy. It is proving to be way easier on the body and seems to have much lower side effects than traditional radiation therapy. The drawback is...it's very, very ,very expensive. (And it's still radiation).
Good luck to you.
Let me know if I can answer any questions regarding my experience for you.