Food Is Fuel. Food Is Medicine.

Great day, celebrate with food. Bad day, soothe with food. Bored, eat. Stressed, eat. Anxious, eat. Happy, eat. For most of my life, food was everything except fuel. It was a reward, a ritual, a friend, a distraction, and a coping mechanism. Often all in the same day.

If any of that sounds familiar, you already know why this article exists.

I’ve been overweight since I was a teenager. I’ve been trying to lose weight for as long as I can remember, and unlike a lot of people with a clean story about cutting one thing and watching the pounds melt off, I was never going to get that easy win. Some people cut soda and beer and drop twenty pounds. That has never been me. I could eat what most people would call a genuinely clean diet and my body wouldn’t budge.

The goal I was chasing was the wrong goal

For most of my life, the goal was weight loss. I tried everything you’ve tried and probably some things you haven’t. I watched friends and family try everything too. Nothing stuck for me the way it stuck for them. I’d drop fifteen pounds, plateau, rebound, start over. That was my pattern for decades.

What finally worked wasn’t a new diet. It was a new goal.

When I stopped trying to lose weight and started trying to build metabolic health, mitochondrial health, immune resilience, and the kind of homeostasis that would give my body the best possible chance of keeping cancer from coming back, the weight fell off as a side effect. Thirty pounds in three months. The thing I’d been chasing my entire adult life showed up the second I stopped chasing it.

Losing weight and getting healthy are not the same thing. You can poison yourself into being thin. People do it every day with stimulants, starvation, nicotine, and stress so chronic the body eats itself alive. The scale rewards all of it. None of it is health.

If you read this article and walk away with another trick to get thin, I’ve failed. The engine underneath is the point. The weight comes off when the engine is running right.

Food is fuel. Food is medicine.

Two things are the foundation of how I think about eating.

Food is fuel. And food is medicine.

I’m not perfect about this. I don’t analyze every bite, and I don’t think anyone should. Obsessing over every meal is its own kind of unhealthy. But I do believe what you eat truly matters. It matters for your energy. It matters for your weight. It matters for your long-term health in ways that compound quietly for decades.

The reverse is also true, and it’s the part nobody wants to hear. Food can heal you. Food can also kill you. Not in one meal. Not in one week. Slowly, and certainly. The sugar, the processed junk, the seed oils, and the industrial chemicals that fill most of an American grocery cart are fuel going the wrong direction. They are the slow-motion engine behind the health epidemic we’re all living through. Obesity. Diabetes. Heart disease. Autoimmune. Cancer.

Nobody wants to believe their favorite snacks are doing that. They are. Every day.

I stopped thinking about food as entertainment a long time ago. That was the shift that made everything else possible.

How we got sold the wrong breakfast

Most of the diet advice you’ve been given in your life wasn’t just wrong. It was sold to you.

In the late 1800s, a Seventh-day Adventist physician named John Harvey Kellogg invented the modern boxed breakfast as part of a wellness doctrine at his Battle Creek sanitarium. His brother W.K. industrialized it, added sugar over John Harvey’s objections, and built an empire on it. By the 1940s, virtually every cereal on the shelf was pre-coated with sugar. A sugar-coated grain product became “the most important meal of the day” because someone needed to sell it.

Then in the 1960s, the Sugar Research Foundation paid Harvard nutritionists to publish literature reviews in top medical journals that downplayed sugar’s role in heart disease and pointed the finger at dietary fat instead. Those documents were unearthed in 2016 and published in JAMA Internal Medicine. That funded nudge echoed all the way into the 1980 Dietary Guidelines for Americans, which told an entire generation to cut fat and replace it with grains and carbs. Over the forty years that followed, obesity, type 2 diabetes, and heart disease did not go down. They went up. Dramatically.

Call it what it was. Marketing and bad public health compounding over seventy years. It’s why “low-fat yogurt” is a grocery store category and full-fat butter sounds dangerous. It’s why a bagel with juice is a normal breakfast and a steak is decadent. It’s backwards, and we all grew up inside it.

Your parents ate a different version of everything

The most common argument you’ll hear when you start talking about any of this is, “My parents ate McDonald’s their whole life and they were fine.” It feels true. The name over the door hasn’t changed. The golden arches haven’t changed. The fries look the same.

The food isn’t the same.

To put it into perspective, in 1955 McDonald’s fries had six ingredients. Potatoes, salt, a little corn syrup, a dash of sugar, cooked in a blend that was 93% beef tallow and 7% cottonseed oil. That was the famous fry. James Beard raved about it. Julia Child raved about it. It was real food.

Then in 1990, after years of pressure from an activist who believed saturated fat was the root of heart disease, McDonald’s swapped the tallow for vegetable oil. Their stock dropped 8.3% the day they announced it. To fake the flavor that was lost, they added “natural beef flavor” made from hydrolyzed wheat and milk. The trans fats in the hydrogenated vegetable oil later turned out to be worse for the heart than the tallow had ever been. So they changed the oil again in 2002. Then again in 2007.

Today’s McDonald’s fries have nineteen-plus ingredients across the potato and the oil. Dextrose. Sodium acid pyrophosphate. TBHQ. Dimethylpolysiloxane. Citric acid. A rotation of industrial seed oils. Your body processes every one of those, every time.

When someone tells me their parents ate McDonald’s fries and were fine, I tell them their parents didn’t eat McDonald’s fries. They ate potatoes fried in beef fat. That food doesn’t exist anymore. What’s sold under the same name today is a different product in a nearly identical box.

The same story plays out across the grocery store. Doritos launched in 1964 with three ingredients. Corn, vegetable oil, salt. A bag of Nacho Cheese Doritos today has more than forty ingredients, including MSG, disodium inosinate, disodium guanylate, artificial colors Yellow 6, Yellow 5, and Red 40, and partially hydrogenated soybean and cottonseed oil. The Onion ran a parody headline in 1996 called “Doritos Celebrates One Millionth Ingredient.” That joke keeps getting more true every year.

The “my parents were fine” defense doesn’t hold. Your parents ate real food. You’re eating a chemistry experiment that happens to share a name with the food your parents ate.

My family knew better. I still couldn’t lose weight.

One of the reasons I trust my family’s work is that my dad was never confused about any of this.

My dad, Bob Doman, founded NACD over forty-five years ago, and has spent his career teaching parents that the boxed-breakfast, grain-heavy, sugar-normalized American diet was doing real damage to developing brains. NACD’s article The Truth About Breakfast says it plainly. High-sugar, processed-carb breakfasts cause blood sugar spikes and crashes that destroy focus, behavior, and learning. The kids it hits hardest are the ones with ADHD, autism, and other neurodevelopmental challenges, but it hits everyone.

My dad tells a story about watching a child eat pancakes in the morning and literally fall off her chair during a math test an hour later. The same physiology that was sabotaging that little girl was sabotaging me, silently, my entire adult life.

I grew up inside this knowledge. I wasn’t starting my day with Cap’n Crunch. I wasn’t drinking orange juice for breakfast. I was eating what any reasonable person would call a healthy diet.

And I still couldn’t lose weight.

What I didn’t understand until very recently was that even the clean, reasonable version of what I was eating was spiking my glucose silently, hour after hour, every day. My blood sugar was on a rollercoaster. My insulin was chronically elevated. When insulin is high, your body is locked in fat-storing mode no matter how virtuous your plate looks. You can’t burn fat through a wall of insulin. The door is closed.

I only saw it when I put a continuous glucose monitor on for six months with Levels. I wrote about that in the first article in this series. The short version: foods I had been eating for years, genuinely believing I was doing the right thing, were crushing me. Your list will be different from mine. That is the entire point. Your metabolic response to food is personal, and until you can see how your body actually responds, you’re guessing.

This is why Diet is Step 01 in the Doman Health hierarchy. Nothing above it holds without it.

Three things I won’t let back in

If you do nothing else from this article, cut these three.

Sugar. The obvious one. It’s in everything. It’s the clearest single driver of the glucose spikes that keep your body in fat-storing mode, and it’s the clearest single villain in modern disease. Read labels. My dad has written about the sixty-plus names sugar hides behind. If any of them appear in the first three ingredients, that’s a sugar product. Put it back.

Sugar alternatives. Most people don’t think twice about these. They should. Aspartame. Sucralose. Saccharin. Acesulfame K. The “zero calorie” promise on the can is a lie your gut microbiome pays for. A 2022 study from the Weizmann Institute, published in Cell, put 120 healthy adults on these sweeteners for two weeks. Saccharin and sucralose significantly impaired their glycemic responses. The sweeteners didn’t just fail to help. They made the problem worse. I treat them the same way I treat sugar. I don’t want them in my house.

“Sugar-free” ultra-processed food. This is the trap. Anything marketed as “sugar-free,” “diet,” or “light” is usually a Frankenfood pumped with artificial sweeteners, seed oils, emulsifiers, and flavor chemicals designed to hit your brain the same way the real thing does. Call it what it is: industrial food wearing a health-food costume.

These three are the doorway into the bigger pattern. Once you start reading labels, the seed oils and the industrial additives and the “natural flavors” show up everywhere. Your salad dressing. Your “healthy” granola. Your kids’ crackers. Your protein bars. The rule I use to cut through it: if it didn’t exist a hundred years ago, I’m skeptical. If it came out of a lab, it’s probably not medicine.

Cut the three. The rest gets easier to see.

Closing

Most of us were raised on a story about food that was wrong at the root.

Fat was the villain. Grains were the hero. Sugar was fine. Cereal was healthy. Pasta was a safe dinner. Juice was a gift for your kids. Every one of those ideas was either marketed to us by an industry or was the accidental result of fifty-year-old bad science that nobody has bothered to correct in the grocery store.

Zoom out. Your body knows the difference. It has been telling you, quietly, for years. The afternoon crash. The brain fog. The weight that won’t move. The cravings that never stop. The irritability. The bad sleep. Your body has been trying to get your attention the whole time. Most of us were never taught how to listen.

Food is fuel. Food is medicine. Start from that belief and your grocery cart changes. Your kitchen changes. The way you feed your kids changes. The story you tell yourself about what you “deserve” changes. Eventually, without you having to grit your teeth through one more diet, your body changes too.

This article was the philosophy. The next one is the playbook. What I actually ate, why I went strict, what clean keto and ketosis are, what food noise is, and how your diet has to evolve through the phases of a real weight loss journey.

Same step in the hierarchy. Different half of the picture.

This article is personal experience and general wellness content. It is not medical advice. Consult your physician before starting fasting protocols, significant dietary changes, or supplementation, especially if you are managing a medical condition, pregnant, or taking prescription medication.