THE WELLNESS CSI™ CASE FILES / CASE 001 / REVIEWED 2026
You don't need another person telling you what to believe.
You probably have enough of that already. What you may need is a place to slow down, understand what you're looking at, separate an interesting idea from established evidence, and figure out which questions are worth asking next.
This case file looks at cancer and chronic disease through several connected questions: what the research says, how nutrition may support the body and immune function, what happens to food and nutritional needs during treatment, and how to investigate diets, fasting, supplements and other claims without confusing an interesting idea with established evidence.
NUTRITION + IMMUNE FUNCTIONThere is a lot here. You do not have to figure it all out today. Pick one question. Start there.
Start with the question in front of you. ACTIVERESEARCH
FILE
I was just diagnosed.
Okay. Where the hell do I even begin?
OPEN ORIENTATION →I'm in treatment.
Help me investigate food, recovery, fasting, supplements and the things I'm hearing about.
OPEN EVIDENCE ROOM →I'm looking at options.
Show me the research, competing ideas and where the evidence actually stands.
OPEN EVIDENCE SCALE →RESOURCES ARE FILED WITH CONTEXT — SOURCE · DATE / ERA · EVIDENCE TYPE · TOPIC · WHY IT'S HERE
The Case Board
Cancer is the diagnosis. It isn't the entire case.
Before you chase a diet, supplement, protocol, podcast or promising study, get clear on the four things already sitting in front of you.
What exactly are we dealing with?
Type, stage, pathology, biomarkers, location, behavior and what has actually been measured.
Who is carrying the diagnosis?
Age, nutrition, muscle, sleep, medications, other conditions, treatment tolerance and life outside the diagnosis.
What is being proposed—and why?
The goal, expected benefit, risks, alternatives, timing and how anyone will know whether it is working.
What still needs a better question?
The things that are uncertain, worth a second opinion, or need another test, conversation or specialist.
The Evidence Room
Not everything you find deserves the same weight.
Some of what I've collected here comes from researchers. Some is education. Some is a claim worth understanding. And some of it is connected to something being sold.
You should know which one you're looking at before you press play.
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Valter Longo — Fasting, longevity and disease research
WHY IT'S HEREIncluded because fasting-mimicking diets keep coming up in cancer conversations. Watch for the research questions—not as a self-treatment protocol.
WATCH SOURCE →
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The Case Files
Some of these have been sitting in my files for years. That matters.
I kept them because they were part of the original research library—not because everything inside them survived the years unchanged.
An old source can still be worth reading. It just shouldn't get to pretend it's new.
The Reference Desk
We collected it. Now let's check it.
This is where I go when I want to know what the evidence says now.
Old books, interviews and theories can give us questions. Current clinical sources help us check the answers.
"Okay, but what should I be eating right now?"
Start with what treatment is asking of your body.
Nutrition during cancer treatment isn't always about finding the "healthiest" diet. Sometimes the immediate job is getting enough food, enough protein, maintaining muscle, managing symptoms and avoiding something that interferes with treatment.
These four records also appear in their national desks below. This is an index into the Reference Desk, not a separate set of sources.
REFERENCE DESK · NCI + PUBMED · S3 + DKFZ · CANCER SOCIETY NZ · REVIEWED 09 / 2026
People Worth Knowing
A researcher can be worth following without every idea becoming an instruction.
Valter Longo's work on fasting, fasting-mimicking diets, aging and disease is one of the research threads I've followed for years. It belongs in this file because the questions are interesting—and because some of those questions have moved into human clinical research.
IDENTIFICATIONPHOTOGRAPH
AWAITING FILE
- WHO
Valter Longo, PhD
- RESEARCH THREAD
- Fasting · Fasting-Mimicking Diet · Metabolism · Aging · Disease
- WHY HE'S IN THE FILE
His work is one of the main reasons fasting keeps turning up in cancer conversations. I've taught his protocols myself, so this isn't a research thread I discovered last week. I've followed the work, taught the principles and watched the claims around fasting get louder as the science has gotten more interesting. The interesting part was never that fasting cures anything. It's that a specific, carefully designed version of it has moved into human clinical research.
The biological rationale and the research program behind it — how fasting-mimicking cycles may change metabolic conditions, treatment tolerance or treatment response.
Human clinical research has examined fasting-mimicking approaches in specific cancer settings. The cancers, treatments and research questions vary—which is exactly why the details matter.
That someone in cancer treatment should start fasting on their own. Weight loss, malnutrition and muscle loss carry real risk during treatment. This is a conversation for the oncology team and a cancer dietitian.
Interesting research is not automatically a personal treatment instruction.
Claims Worth Investigating
You're going to run into these anyway.
Some will come from friends. Some from podcasts. Some from people who swear something saved their life. And some from somebody with a very convincing website and something to sell.
I'm not interested in mocking them. I'm interested in asking better questions about them.
Researchers are studying whether short fasting-mimicking cycles may affect metabolism, treatment tolerance, or treatment response in selected cancers.
Human clinical trials have examined fasting-mimicking approaches in specific cancer settings, but this remains an area of investigation rather than a universal cancer-treatment recommendation.
During cancer treatment, weight loss, malnutrition and muscle loss can be dangerous. Fasting should be discussed with the oncology team and a cancer dietitian.
Given my cancer, my treatment and my current weight and muscle, is there any version of this that would be safe for me — and how would we tell if it were helping?
The theory is that changing glucose availability and tumor metabolism may influence cancer biology.
Human evidence remains limited. A 2024 meta-analysis found insufficient evidence for a definitive link between ketogenic diets and cancer-related outcomes.
A restrictive diet can make it harder to maintain weight, protein intake and muscle during treatment. Suitability depends on cancer type, treatment and nutritional status.
If I cut carbohydrate this far, how do I keep my weight and protein where they need to be during treatment?
The regimen emphasizes a strict plant-heavy diet, juices, supplements and frequent enemas.
NCI reports that available clinical evidence does not establish the Gerson regimen as an effective cancer treatment.
Coffee enemas and highly restrictive regimens carry risks. Do not use the approach to replace or delay evidence-based cancer treatment.
What would I be giving up in time, money and treatment while I did this — and what evidence would justify that?
Proponents have claimed immune, detoxification and anticancer effects.
NCI reports no controlled human data showing that Essiac or Flor Essence effectively treats cancer.
Herbal products can vary by formulation and may interact with treatment. Bring the exact product list to your medical team.
Here is the exact product and dose I am considering. Does anything in it interact with what I am already taking?
Many products are marketed around antioxidant, anti-inflammatory, immune or laboratory findings.
A biological mechanism, patent, cell study or animal result does not establish that a product treats cancer in people.
Some supplements and foods can change how anticancer drugs are absorbed or metabolized. Check them against the actual treatment regimen.
Is the evidence behind this from cells, animals or people — and who profits if I buy it?
Seed oils / Black cumin / SOUL
This is not an endorsement of any product. It is one worked example of how a commercial health claim can be followed backward through the evidence.
Where is the human clinical evidence for the finished product and the cancer claim being made?
How Strong Is the Evidence?
Interesting isn't the same thing as established.
Something can be fascinating in a laboratory and still not be established as a cancer treatment in humans. That doesn't make the research worthless. It tells us where we are in the investigation.
Study quality still matters. So do size, design, population, outcome and whether the research actually applies to the person sitting in front of you.
Where did the claim actually earn its evidence?
Build Your Case File
You don't need to remember all of this. Take the questions with you.
A diagnosis can turn a ten-minute appointment into a blur. You think you'll remember what you wanted to ask. Then somebody says something important, your brain goes somewhere else, and three questions disappear.
So write them down.
Cancer Conversation Worksheet™
PAGE 1 OF 2
What exactly are we treating?
What is the goal of this treatment—cure, control, symptom relief, or something else?
How will we know whether it is working?
What side effects should I expect, and which ones should make me call immediately?
Are there nutrition concerns specific to my treatment?
Cancer Conversation Worksheet™
PAGE 2 OF 2
Am I at risk for weight loss, malnutrition or muscle loss?
Could any supplements, herbs or teas I'm using interfere with treatment?
Would fasting or a restrictive diet be inappropriate for me?
Is there a reason to get a second opinion?
What question have I not asked you that you wish more patients asked?
Type here or print it blank. Your answers stay in this browser and aren't sent to us.
TOO MUCH? → TAKE ME BACK TO STARTEducation is not treatment.
I am a coach and educator. I am not your oncologist, and this website does not know your diagnosis, pathology, medications, nutritional status or treatment plan. Use this material to understand more and ask better questions—not to stop, delay or replace medical treatment.
If something here makes you want to change treatment, fasting, diet or supplements, bring it to the medical professionals who actually know your case.
THE WELLNESS CSI™ / CASE 001 / REVIEWED 09 / 2026