Cranberry RCT study

Posted by handera @handera, Nov 27, 2025

Always interested in natural methods that have solid science behind them.

Stumbled upon a double-blind RCT study where 64 PCa patients were randomly assigned to receive 1500 mg of dry cranberry fruit powder or placebo daily for at least 21 days (avg 31 days) prior to undergoing radical prostatectomy.
https://biomed.papers.upol.cz/pdfs/bio/2016/04/17.pdf
The cranberry arm experienced a significant 22.5% decrease in their PSA levels compared with 0.9% increase using a placebo (P < .05) immediately prior to surgery. There were no differences, however, in prostate tissue markers (IMO this is not that unexpected with such a short trial duration for this study).

Since I prefer food over supplements, I plan to drink 8 ounces per day of 100% unsweetened Ocean Spray cranberry juice until my next PSA test in February 2026 and see if there’s any changes….stay tuned!

Ocean Spray 100% unsweetened cranberry juice has the highest soluble PAC level of all the types tested by consumer lab.com.

Interested in more discussions like this? Go to the Prostate Cancer Support Group.

Profile picture for heavyphil @heavyphil

@handera Hey Ed, I have not eaten breakfast for over 50 yrs…my thought being that all those calories I ate the night before at dinner were stored as glycogen and waiting to be used.
If you have breakfast, it’s those calories which will be burned first and your glycogen will then be stored as fat.
I am now reading that my routine is categorized as a ‘mini-fast’ and I have a good 18 -20 hrs some days between yesterday’s dinner and today’s lunch.
It has really helped me maintain my boyish figure😉

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@heavyphil Hi there: Studies show that exercising after a fast of 6-8 hours burns up the most sugar and fats, given that you hydrate well.
Thanks for the tip on the cranberry juice-I will mix it with our Aldi brand pomegranate plum juice, as the flavor is hard to beat.

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Profile picture for brianjarvis @brianjarvis

@handera That’s good.

In addition to your PSA and PSA Doubling Time, do you know your PSA Density and % Free PSA? Those are additional biomarkers helpful to track.

Also, consider that since PSA levels are tied to testosterone levels, with testosterone levels being diurnal, getting PSA tested at about the same time each test might provide some value.
—> https://pubmed.ncbi.nlm.nih.gov/31390085/

My PSA numbers were not as stable as yours while I was on active surveillance. Mine zig-zagged upwards (see my attached PSA chart).

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@brianjarvis

My current prostate volume is 44.6ml. My current PSA result of 6.47 PSA indicates a PSA density of 0.145.

At my October 2023 diagnosis, my prostate volume was 43.5ml with a 7.8 PSA indicating a PSA density of 0.179.

My original Oct 2023 mpMRI found three lesions: one PIRAD 5 (2.2 x 1.1 cm), one PIRAD 4 (0.7 cm) and one PIRAD 3 (0.9 cm).

An Oct 2024 follow-up mpMRI found only one lesion (now 1.9 x 1.1 cm), while the other two were not visible.

My latest (Feb 20, 2026) mpMRI also only found one lesion, now rated PIRADS 4 and 1.1 x 0.4 cm.

My 12.3 year PSA doubling time, PSA density reduction from 0.179 to 0.145 and serial mpMRI lesion size reductions are all favorable for continuation of my active surveillance protocol.

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Profile picture for handera @handera

@brianjarvis

My current prostate volume is 44.6ml. My current PSA result of 6.47 PSA indicates a PSA density of 0.145.

At my October 2023 diagnosis, my prostate volume was 43.5ml with a 7.8 PSA indicating a PSA density of 0.179.

My original Oct 2023 mpMRI found three lesions: one PIRAD 5 (2.2 x 1.1 cm), one PIRAD 4 (0.7 cm) and one PIRAD 3 (0.9 cm).

An Oct 2024 follow-up mpMRI found only one lesion (now 1.9 x 1.1 cm), while the other two were not visible.

My latest (Feb 20, 2026) mpMRI also only found one lesion, now rated PIRADS 4 and 1.1 x 0.4 cm.

My 12.3 year PSA doubling time, PSA density reduction from 0.179 to 0.145 and serial mpMRI lesion size reductions are all favorable for continuation of my active surveillance protocol.

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@handera A PSA Density threshold of 0.15 (sometimes 0.20) or above is commonly used to trigger further investigation. Yours is borderline.

Regarding the MRI results —> October 2023 (3 lesions; PIRADS 3/4/5), October 2024 (1 lesion), and February 2026 (1 lesion; PIRADS 4). Have you had definitive confirmation on the status of those lesions?

With the changing number of lesions seen, have you obtained second opinions on those? A PIRADS score is a specialist’s educated and expert “opinion” of what he (or she) believes they see in an image - it’s often as much an art as it is a science. It’s always valuable to get 2nd opinions - especially with lesions disappearing. (Lesions don’t simply “disappear.”)

And the % Free PSA also provides valuable information as to what steps to do next.

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Profile picture for brianjarvis @brianjarvis

@handera A PSA Density threshold of 0.15 (sometimes 0.20) or above is commonly used to trigger further investigation. Yours is borderline.

Regarding the MRI results —> October 2023 (3 lesions; PIRADS 3/4/5), October 2024 (1 lesion), and February 2026 (1 lesion; PIRADS 4). Have you had definitive confirmation on the status of those lesions?

With the changing number of lesions seen, have you obtained second opinions on those? A PIRADS score is a specialist’s educated and expert “opinion” of what he (or she) believes they see in an image - it’s often as much an art as it is a science. It’s always valuable to get 2nd opinions - especially with lesions disappearing. (Lesions don’t simply “disappear.”)

And the % Free PSA also provides valuable information as to what steps to do next.

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@brianjarvis

Started with a new urologist last November, next appointment tomorrow, will see what he has to say about latest results. He was quite comfortable with my continuing AS, based on numbers and condition before latest results…which have just improved in the meantime.

I will not have another biopsy, due to suffering from Dysorgasmia for months after previous biopsy (lingering effects even 2.5 years later….I know, I know it’s rare….but personal experience trumps pablum medical SOC answers and the higher likelihood (in my case) for another Dysorgasmia reoccurrence in any subsequent biopsy, based on proven research.

I will be asking for the My Prostate Score 2.0 test (or possibly the PSE test)…it will be my only option to a biopsy….of course I’ll continue regular PSA and mpMRI’s….but no more biopsies…

I would be willing to submit to some form of advanced radiation therapy, if/when there is clear evidence of significant progression….but another biopsy is out of the question….therefore a second opinion, in my particular case, is moot.

BTW: Research indicates that MRI “lesions” often disappear for those diagnosed with low risk prostate cancer…it’s because they were originally only inflammation areas, which were misidentified as cancerous “lesions” in previous mpMRI’s…that’s what happened in my case…check out the research…

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Profile picture for jc76 @jc76

@heavyphil
I have heard of this mini fast.

The one I read was trying to eat dinner early and not eat or snack until breakfast. Goal was to get a 12 hour fast.

I then read how important breakfast was to get your metabolism going to digest the food. Then I thought like you wait a minute. If I don't eat breakfast and exercise am I not burning fat off as don't have any carbs in me from a meal.

So I am experimenting with both plans to see what works the best.

The only con about not eating breakfast is when I get to lunch I am really hungry and tend to eat more.

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@jc76
I had been intermittent fasting for years, never eating breakfast and having 14 hours between meals. It certainly didn't stop my cancer development.

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Profile picture for stanjumper @stanjumper

@jc76
I had been intermittent fasting for years, never eating breakfast and having 14 hours between meals. It certainly didn't stop my cancer development.

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@stanjumper

…just curious….what was your Gleason score and Decipher score prior to getting treatment?

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Gleason was 4+3=20 (Grade Group 3). The decipher was terrible being one. After 3 months if Eligard (Lupron) and one month on Orgovyx, my PSA has gone from 15 to .1. I hate the side effects, but it seems to be working. I just started Darolutimide last week.

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