Sugar, Cancer, and the Judgment Cupcake

Sugar, Cancer, and the Judgment Cupcake

🌼 Date: Monday, July 20, 2026

⚡ Energy: Slightly defensive, slightly informed, and still wanting dessert

💝 Status: Taking on another cancer myth

🤔 Outlook: A cookie is not a recurrence summons

Today I want to talk about sugar.

Specifically, the misconception about sugar and cancer.

Because one of the first things people say to someone with cancer is:

“Cancer feeds on sugar. You need to cut all sugar out of your diet.”

And listen.

I will admit something right here.

I was guilty of saying that to Bryan when he was diagnosed with cancer.

His sugar of choice was Mountain Dew Baja Blast.

That boy loved his Baja Blast.

And when he was sick, I remember thinking, “Nope, no sugar, sugar feeds cancer.”

Because that is what you hear.

That is what gets repeated.

That is what floats around online, in comment sections, in support groups, in family conversations, and from people who are trying to help but may not fully understand the science.

Then I ended up in the chemo chair.

And suddenly I was the one everyone was telling to lay off the sugar.

Full circle.

Rude.

Very rude.

Now every time I eat anything with sugar or sweetener in it, I feel judged.

Sometimes by other people.

Sometimes by the invisible jury of internet wellness experts.

And sometimes by myself.

And let me tell you, there is no harder judge than yourself.

That woman knows all your weak spots and has no problem using them.

So, of course, Doctor Google and I had to have a little meeting.

And what I found helped me breathe a little.

Because the whole “sugar feeds cancer” thing is an oversimplified misunderstanding of how cancer cells use energy.

Yes, cancer cells use glucose.

But so does every other cell in your body.

Your brain uses glucose.

Your muscles use glucose.

Your immune system uses glucose.

Your healthy cells use glucose.

Your body is not sitting there saying, “This bite of cookie is for the cancer cells, and this bite of broccoli is for the respectable cells.”

That is not how any of this works.

Wouldn’t it be nice if we could selectively starve cancer cells by refusing dessert?

Absolutely.

I would give up cupcakes forever if it worked that way.

Okay.

Maybe I would cry first.

But I would do it.

The problem is, your body is much more complicated than a motivational Pinterest quote.

If you stop eating sugar or carbohydrates completely, your body still has to keep your blood sugar in a safe range because you need glucose to live.

So your liver will make glucose from other sources when it needs to.

Stored proteins.

Fats.

Whatever materials it has available.

Because your body is trying to keep you alive, not follow a Facebook comment section meal plan.

This is also why PET scans add to the confusion.

PET scans use a radioactive sugar tracer because cancer cells often use glucose faster than many normal cells.

That tracer lights up areas that are using a lot of glucose.

So people hear that and think, “Aha! Sugar feeds cancer. Cut sugar and starve it.”

I get why that sounds logical.

It sounds like simple math.

Cancer likes glucose.

Therefore, no glucose.

Therefore, no cancer.

Unfortunately, cancer is not a toddler we can distract by hiding the Halloween candy.

Cancer cells are adaptable little jerks.

They do not politely starve because I skipped dessert.

If it were that easy, oncology treatment would look very different.

There would be no chemo chairs.

No radiation tables.

No surgeries.

No hormone blockers.

Just everyone standing around eating kale and glaring at birthday cake.

But that is not reality.

The danger of this myth is that it can make cancer patients terrified of food.

And let me tell you, we already have enough to be terrified of.

We do not need to add “is this banana trying to kill me?” to the list.

During cancer treatment and recovery, your body needs energy.

It needs protein.

It needs calories.

It needs nutrients.

It needs fuel to heal from surgery, survive chemo, recover from radiation, rebuild muscle, support your immune system, and keep you functioning.

Extreme food restriction can lead to weight loss, muscle wasting, weakness, anxiety, and even make it harder to tolerate treatment or recovery.

And since I am currently trying to rebuild strength with two-pound dumbbells and a walking pad in my living room, I can confidently say I do not have extra muscle to donate to panic dieting.

No thank you.

My muscles already packed a suitcase during chemo and wandered off like unsupervised toddlers.

We are trying to bring them home.

Now, does that mean I should live on cookies, soda, cake, and frosting by the spoonful?

No.

Obviously not.

Even Google MD and I can agree on that.

The real connection between sugar and breast cancer is more indirect.

It is not a direct pipeline where one cupcake marches straight to a tumor and says, “Good news, I brought snacks.”

The bigger concern is long-term metabolic health.

Too much added sugar, especially from ultra-processed foods and sugary drinks, can contribute to weight gain, insulin spikes, inflammation, and other health issues.

And after menopause, body fat can affect estrogen levels, which matters for hormone-sensitive breast cancer.

So yes, nutrition matters.

Balance matters.

Metabolic health matters.

But occasional sugar?

A treat?

A dessert?

A sweet coffee?

A piece of cake at a birthday party?

That does not mean you just bought a front-row ticket to recurrence.

That is the part I need my own brain to understand too.

Because the guilt is real.

The food fear is real.

The judgment is real.

Cancer already steals enough joy.

I refuse to let it turn every meal into a courtroom drama.

From what I understand, the goal is not zero sugar.

The goal is better balance.

More whole foods.

More protein.

More fiber.

More fruits and vegetables.

More foods that support healing.

More water.

More paying attention to how my body feels.

Less soda.

Less ultra-processed sweets.

Less living in a state of dessert shame.

Notice I said less.

Not never.

Because fruit has natural sugar.

Vegetables can have natural sugar.

Dairy has natural sugar.

Whole grains break down into glucose.

And those foods also bring vitamins, minerals, fiber, protein, and all kinds of things my body actually needs.

I am not cutting out fruit because someone on the internet decided sugar is the devil.

Fruit did not give me cancer.

And a cookie is not going to personally escort it back.

Could I be more mindful about added sugar?

Yes.

Could I make better choices most of the time?

Yes.

Could I trade constant sugary drinks for more water, tea, protein shakes, or whatever suspiciously healthy thing I am trying this week?

Yes.

Could I still eat dessert without spiraling into shame?

Also yes.

That is the goal.

Not perfection.

Not punishment.

Not fear-based eating.

Not turning every bite into a moral exam.

Just balance.

Information.

Common sense.

And maybe not letting cancer take cupcakes too.

Because honestly, haven’t we given it enough?

So here is my Tina PSA:

If you see a cancer patient eating something sweet, maybe do not immediately leap across the table with a lecture about sugar feeding cancer.

Maybe do not comment on their dessert.

Maybe do not side-eye their coffee.

Maybe do not make them feel like they are personally betraying their survival because they ate a brownie.

They know they have cancer.

Or had cancer.

Trust me.

They know.

Their medical team knows.

Their body knows.

Their bank account knows.

Their scars know.

Their hair follicles know.

Their neuropathy knows.

Their entire life knows.

They do not need the dessert police.

If you are genuinely concerned, encourage them to ask their oncology team for a referral to an oncology dietitian.

That is helpful.

That is kind.

That is evidence-based.

That is not the same thing as telling someone their bite of cake is feeding the monster.

Words matter.

Food fear is real.

And shame is not a treatment plan.

So yes, I am trying to eat better.

I am working on protein.

I am increasing fluids.

I am rebuilding strength.

I am paying attention to what helps my body recover.

I am learning.

I am adjusting.

I am doing my best.

But I am also not going to live the rest of my life terrified of a cookie.

Cancer took my breasts.

It took my hair.

It took my strength.

It took my stamina.

It took my sense of safety.

It took my trust in my own body.

It does not get to take every piece of joy from my plate too.

So no, sugar is not something I need to mainline like an emotional support IV.

But it is also not an automatic cancer button.

A treat is not a failure.

A dessert is not a death wish.

A sweet coffee is not a recurrence summons.

And eating sugar after cancer does not mean I am first in line for the cancer comeback tour.

I am allowed to heal.

I am allowed to learn.

I am allowed to make better choices without hating myself for imperfect ones.

I am allowed to enjoy something sweet once in a while without handing the judge in my head a microphone.

So to Bryan, wherever you are, I am sorry I said the Baja Blast thing.

I was scared.

I thought I was helping.

I know better now.

And to everyone else walking this road:

Eat the fruit.

Enjoy the birthday cake.

Talk to your medical team.

Find balance.

Do not let fear make your food choices for you.

And please, for the love of all things frosted, do not let cancer convince you that every cupcake is out to get you.

Tiny Tina is learning.

Google MD is on probation.

And the judgment cupcake has been dismissed.

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One Badass Day at a Time