The Future of Cancer Screening
When it comes to surviving cancer, the single most important factor is catching it early. Once
cancer spreads to distant organs (Stage 4), survival rates drop drastically—yet catching it even
one stage earlier can cause survival rates to skyrocket. In this video, we explore The Future of
Cancer Screening, why traditional screening methods are failing us, and how a newly FDA-
approved blood test could completely change the game.
For decades, standard population-based cancer screenings like mammograms, colonoscopies,
PSA tests, and CT scans have been considered the cornerstone of cancer prevention. However, a landmark 2023 study in JAMA Internal Medicine revealed a shocking truth: most conventional screening tests fail to show any statistically significant increase in overall lifespan. Why?
Because traditional tests are based on an outdated paradigm that looks for tumor size rather than tumor spread (metastasis).
Today, breakthrough technology allows us to detect minute levels of circulating tumor DNA
(ctDNA) through a simple, non-invasive blood test—often called a liquid biopsy. We dive deep into the Galleri Test by GRAIL, a Multi-Cancer Early Detection (MCED) test evaluated in a massive 140,000-patient randomized controlled trial. Discover how shifting detection from Stage 4 to Stage 3 can improve survival rates by 4x to 6x in lethal cancers like bladder, liver, bile duct, and esophageal cancer—cancers that previously had no early screening tests at all.
In this video, you will learn:
● Cancer Stages Explained: The critical difference between early-stage disease (Stage 1 &
2), regional spread (Stage 3), and distant metastasis (Stage 4).
● The Truth About Current Screenings: Insights from the 2023 JAMA study on
mammograms, colonoscopies, PSA tests, and the risks of unnecessary invasive biopsies.
● Tumor Size vs. Metastasis: Why the genetic paradigm of cancer is outdated and why early
spread matters far more than tumor size.
● What is a Liquid Biopsy (ctDNA)? How Multi-Cancer Early Detection (MCED) blood tests
identify cancer signatures across dozens of cancer types simultaneously.
● The Galleri Test Clinical Trial: Breaking down the 140,000-patient trial results and how
annual testing reduces Stage 4 cancer diagnoses by up to 26%.
● Stage 3 vs. Stage 4 Survival Rates: How catching bladder, liver, and esophageal cancers
just one stage earlier increases survival by 4x to 6x.
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�� Recommended Reading: To learn more about the evolutionary paradigm of cancer, wh
traditional models fall short, and how we can better prevent and treat disease, check out the book:
The Cancer Code.
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ABOUT DR. JASON FUNG
Dr. Jason Fung is a physician and bestselling author known for his work and educational content on
fasting, nutrition, insulin, and metabolic health.
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⏱️ Video Chapters (Timestamps):
00:00 – The Future of Cancer Screening & Why Early Detection Matters
00:42 – The 4 Stages of Cancer & Metastasis Explained
01:24 – The Problem with Traditional Cancer Screenings (Mammograms, PSA & Colonoscopy)
02:15 – Why Over 70% of Cancer Deaths Aren't Prevented by Current Screenings
03:30 – 2023 JAMA Study: Do Mammograms & Colonoscopies Actually Save Lives?
05:30 – Life Gained from Traditional Screenings: The Shocking Data
06:21 – Why Current Tests Fail: Tumor Size vs. Early Metastasis (The Cancer Code)
08:08 – What is Circulating Tumor DNA (ctDNA) & Liquid Biopsy?
08:37 – The Galleri Test by GRAIL: Multi-Cancer Early Detection (MCED)
09:34 – 140,000-Patient Trial Results: Stage 4 vs. Stage 3 Cancer Reduction
12:08 – Stage 3 vs. Stage 4 Survival Rates (Bladder, Liver & Esophageal Cancer)
14:07 – FDA Approval & Why Liquid Biopsies Are the Future of Cancer Screening
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#TheFutureOfCancerScreening #CancerScreening #LiquidBiopsy #GalleriTest
#EarlyCancerDetection #TheCancerCode #ctDNA #CancerPrevention #MedicalBreakthrough
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❤ again: helping us help ourselves. Saving us from unnecessary suffering
How come no one ever discusses in blood and bone cancers.
That’s because many of these are caught with a basic CBC blood test.
Hopefully everyone is getting their CBC/CMP done yearly. Always ask for a “CBC with diff” to get a better idea as to what’s going on.
Even if you’re not visiting a doctor… go get your own blood done at a lab. These are about $10/ea.
Thanks for the update, your Cancer Code book is excellent
Here’s a story of a man who caught pancreatic cancer early, due to this test: https://www.youtube.com/watch?v=Vi5NXuHxC4g&t=9s
10 years ago I had a patient tell me that there are cures for cancer, but the medical establishment is not interested especially the pharmaceutical divisions. Back then I thought it was crazy. Now I realize he’s 100% right. He was a young man with very severe cancer, in fact, I seriously doubt he’s with us anymore. But he was right.
Please discuss the treatment plan involved for Stage 3 cancers that lead to the improved survival rates.
Wow, never knew this before! Thanks for sharing
Dr. Fung you do this because you care, I did learn a lot. Thank you.
Don’t care what people say. Haters gonna hate.
I am grateful for you Dr. Fung and your work. I will be getting your book.
Great video, really enjoyed this one!
Love this content, keep it up!
Incredible channel, always learning something new here.
Liquid biopsies could open a new chapter in cancer detection, especially for cancers that currently lack effective routine screening options.
Earlier detection is promising, but we still need strong clinical evidence that these tests improve survival and reduce cancer related deaths, not just detect cancer sooner.
Liquid biopsy technology could be a major step forward in detecting cancers earlier, especially those that have traditionally been difficult to screen for.
Thanks Dr. Fung.
Amazing video, learned so much from this!
This is exactly what I needed to hear today
I’m doctor and The Forgotten Health Secrets by Rihard Mercer reminded me most of this video. It’s one I suggest all my patients to read.
Great content as always, keep it up!
As a doctor, I genuinely found The Forgotten Health Secrets by Rihard Mercer incredibly eye opening. Definitely worth a read.