Some Food Myths I use to Believe

What’s True, What’s a Myth, and What Real Food Can Really Do

An honest, hopeful look — from someone who went all in with natural only to realize it was only part of the story.

If you’ve ever gone searching online about food and cancer, you know how frightening and confusing it gets — big promises, scary warnings, and a hundred voices swearing they’ve found the answer. I’ve lost people I love to cancer, so I care about this more than I can say. And precisely because I do, I want to be a truth-teller here, not a myth-repeater — because in this one area, a pretty-sounding lie can cost a life. So let’s gently sort the true from the false, and land on the real, hopeful thing that food can do.

Myth: “Sugar feeds cancer, so cut it out to starve the tumor”

This one has a fascinating kernel of truth. Back in the 1920s, a Nobel-winning scientist named Otto Warburg noticed that cancer cells gobble up glucose at a remarkable rate — a quirk now called the “Warburg effect.” It’s so reliable that it’s actually how PET scans find tumors: they follow the sugar. Genuinely cool science.

But here’s where the popular leap goes wrong. Every cell in your body runs on glucose — your brain, your muscles, all of it — not just cancer cells. And your body guards your blood sugar within a tight range no matter what you eat; if you stopped eating carbs entirely, your liver would simply make glucose from other things like protein. So you can’t “starve” a tumor by cutting sugar from your plate — the cancer will always find fuel, and meanwhile you might rob your body of strength it needs. Oncology dietitians will tell you this myth causes real harm, heaping food-fear onto people already carrying so much.

Now — does that mean sugar gets a free pass? Not at all. Too much added sugar is genuinely worth avoiding, just for a different reason than we’re told: over time it feeds obesity, insulin resistance, and inflammation, and those do raise cancer risk. So going easy on added sugar is a wonderful, wise habit — for prevention and whole-body health — not as a way to fight a tumor you already have. I personally follow a high fat (healthy fat) 80% diet, while trying to keep protein at 15% and fibrous carbs and sulfuric vegetables at 5% when I am working to reduce inflammation in my body and limiting the 'food preference' of unhealthy cells.

The reason to go easy on sugar is your long-term health — not the hope that you’re quietly starving a cancer. Bodies simply don’t work that way.

Myth: “Cancer can’t survive in oxygen — just re-oxygenate the cells”

Warburg had a second idea too: that cancer is caused by cells being starved of oxygen. It was a reasonable guess a century ago — but science has largely set it aside. We now understand that cancer begins mainly with genetic mutations, and the odd metabolism follows from that, rather than oxygen starvation being the root cause. And — as you may have already sensed yourself — flooding a cancer cell with oxygen doesn’t turn it back into a healthy one. “Oxygen therapies” are not proven cancer treatments, however appealing the idea sounds.

The hard one: the Gerson protocol and “juice cleanses for cancer”

I understand the appeal completely — heaps of fresh organic vegetable and fruit juice sounds like exactly the pure, healing thing a body would want. But I have to be honest with you about the Gerson regimen, because your safety matters more than a comfortable answer. Major cancer bodies — the American Cancer Society, Cancer Research UK, the National Cancer Institute, Memorial Sloan Kettering — have looked, and found no reliable evidence that it treats or cures cancer. And part of the protocol, the coffee enemas, has genuinely hurt people: documented cases of dangerous mineral imbalances, infections, and even deaths.

But the very greatest danger isn’t the enema. It’s substitution — a frightened person choosing juice instead of the surgery, chemo, radiation, or immunotherapy that could actually have saved them, and losing precious time. That’s the heartbreak I never want to play any part in. So please hear me, friend: by all means love your vegetables and your fresh juice — just never, ever in place of real treatment.

So here’s the true, hopeful part

After all that, please don’t feel discouraged — because food genuinely does matter, in the ways that are real. A whole-food, vegetable-rich, lower-added-sugar way of eating is one of the best gifts you can give your body. It won’t guarantee anything — nothing can — but eating lots of vegetables, fruits, and whole grains, going easy on processed and sugary foods, keeping a healthy weight, and moving your body are all shown to meaningfully lower the risk of many cancers. That is real power, and it’s yours.

And if cancer has already touched your home, good nutrition still matters enormously — to keep you strong, to help you tolerate treatment, to support your recovery. Not as a replacement for your care, but as a faithful companion to it, ideally guided by your medical team or an oncology dietitian who knows your situation.

This, for me, is how I honor the ones I’ve lost: not with false promises, but with honest hope. I feed my family real, beautiful food because it’s good and it’s wise and it’s an act of love — and I hold that right alongside deep gratitude for the doctors and the medicine that fight for us when we need them most. Truth and hope were never meant to be enemies. We get to have both.

With much love, and honesty,

Steffanie

A caring note: I’m a wellness educator and a mom sharing information and my heart — not a doctor, and none of this is medical advice. Nothing here should be used to diagnose or treat cancer, or to delay, replace, or change any medical treatment. If you or someone you love is facing cancer, please work closely with a qualified oncology team; a whole-food diet can support your health alongside proven treatment, never instead of it. A healthy lifestyle can lower risk but is not a guarantee, and no one is to blame for becoming ill. This is a tender subject — if you’re hurting or grieving, please be gentle with yourself and lean on people and professionals who can walk with you.