I Tried a Potato-Only Diet So You Don’t Have To

(A cautionary tale involving optimism, poor judgment, and a starchy tuber)

At some point in every weight-loss journey, you hit the phase where you think, “What if I just… tried something extreme?” Not because you’re reckless. Not because you lack common sense. But because you’re curious, hopeful, and just vulnerable enough to believe that maybe, just maybe, this one thing will finally be the thing.

Enter: Penn Jillette and the Potato Diet.

A few years ago, I read Presto!: How I Made Over 100 Pounds Disappear and Other Magical Tales because, well, Penn Jillette is wildly charismatic and also because he lost over 100 pounds. When someone drops that much weight and lives to tell the tale, I want the backstory, the footnotes, and the fine print.

Penn’s story is honest, funny, and very clear about one thing: This was not a cute little wellness reset. This was a “my doctor says I might die” situation. Still… there was something intriguing about the idea of “resetting your taste buds.” And this is where curiosity shook hands with bad ideas.

The Plan (Confidence Was High. Wisdom Was Not.)

Our plan, maybe I shouldn’t share ownership of this just yet… My plan was simple:

• Eat only plain potatoes

• No butter

• No salt

• No cheese

• No joy

Just… potatoes.

Boiled. Baked. Steamed. Naked. Vulnerable.

My wife and I were thrilled.

Fourteen days? Easy.

A month? Maybe!

We prepped like survivalists: boiled dozens of mini potatoes in advance so future-us wouldn’t have excuses.

We were organized.

We were committed.

We were wildly unprepared for what was about to happen.

Day 1: Hope Springs Eternal (And So Do Potatoes)

Breakfast!

Potatoes!

There was excitement. There was laughter. There was a sense of novelty.“ How bad could it be?” we asked, chewing cheerfully.

Lunch? Potatoes.

Dinner? Potatoes.

By the end of Day 1, the shine had dulled just a bit. Potatoes, it turns out, rely heavily on butter and salt to maintain their charisma. Still…We did it. We felt accomplished.

We went to bed proud. Confident. Naive.

Day 2: Time Loses Meaning

Day 2 arrived aggressively.

Breakfast potatoes tasted exactly like dinner potatoes.

Lunch potatoes felt personal.

Dinner potatoes felt like betrayal.

By now, hunger existed… but the desire to eat had left the building entirely. Hunger would show up, knock politely, and my brain would respond, “Yeah, but it’s potatoes.”

Psychologically, something shifted.

Food stopped being appealing.

The potato diet began to resemble a water fast with emotional consequences.

I started questioning my life choices.

My wife started questioning her life choices.

Specifically the one where she married me.

We pressed on like two explorers who absolutely ignored the map.

Day 3: The Breaking Point

Day 3 breakfast?

Hard pass.

My wife managed one small potato, and I watched her complexion drift into shades previously undocumented by science.

Lunch arrived.

Potatoes were prepared.

Something inside my wife: spiritually, emotionally, physically, snapped.

She sprinted to the bathroom, where the potato diet officially met its untimely end.

I held on for one more meal out of sheer stubbornness… then folded like a cheap lawn chair in a mild breeze.

We were done.

Aftermath: A Marriage Tested, A Tuber Shunned

We sat there, exhausted, humbled, and wondering if we’d ever be able to look a potato in the eye again.

Spoiler:

Thanksgiving came a few months later.

We let the guests handle the potatoes.

Eventually, we healed.

Emotionally first.

Culinarily later.

The Moral of the Story (Aka: Please Don’t Do This)

Mono diets, also called monotrophic diets, are exactly what they sound like: eating one food and only one food. Potatoes. Apples. Cabbage. Pick your trauma.

They are not recommended for a reason.

Sure, you might lose weight quickly.

You might “reset” something.

You might also reset your relationship with the bathroom… aggressively.

The real risks?

• Nutritional deficiencies (protein, fats, key vitamins, missing in action)

• Digestive and metabolic chaos

• Hormonal disruptions

• Long-term consequences that don’t show up right away

Weight loss doesn’t need to feel like a survival challenge.

So Here’s the Gift We’re Giving You 

We did it.

So you don’t have to.

Healthy habits aren’t built through punishment, deprivation, or potato-based endurance tests. They’re built through balance, consistency, learning what works for you, and yes, making mistakes along the way.

Sometimes spectacular ones.

If you’ve ever tried something extreme and thought, “Well… that escalated quickly,” congratulations. You’re doing this exactly like the rest of us.

And if you’re eyeing a mono diet right now?

Please know:

Potatoes are lovely.

Just… not alone.