Salt, Fat & Sugar What Your Cells Really Need and What's Overloading Them

For decades, we've been told that fat and salt are the villains in our diets. "Low-fat" became synonymous with "healthy," and "salt-free" was seen as heart-smart. Meanwhile, sugar, the sweet, innocent comfort in our coffee and cereal, quietly flooded into nearly everything we eat.

But science is now revealing a different story.

Salt and fat are essential nutrients, critical to our cells, our metabolism, and our nervous system. And while our bodies do need sugar (glucose) for energy, it's the excess and constant supply that's overwhelming our systems and causing many of the issues fat and salt were unfairly blamed for.

Let's break it down.

Salt: the electrical current of life

Salt is more than a seasoning, it's a fundamental electrolyte.

Sodium and chloride ions help regulate fluid balance, nerve conduction, muscle function, and blood volume. Without them, your body can't transmit nerve signals properly or keep your cells hydrated.

In fact, your nervous system literally runs on salt.

The sodium-potassium pump in each of your cells is what allows electrical impulses to fire, powering everything from your heartbeat to your thoughts. When sodium is too low, it can lead to dizziness, fatigue, muscle weakness, anxiety, and even cognitive fog.

When you consume enough salt alongside hydration and minerals, you're supporting proper nerve communication, balanced adrenal and stress response, muscle and heart function, and healthy blood pressure regulation.

And interestingly, salt restriction can sometimes backfire, increasing fatigue, cholesterol, or dehydration.

Fat: your cells' favourite fuel

For years, dietary fat was demonized, associated with heart disease, weight gain, and "clogged arteries." But this oversimplified message ignored the vital role of fat in cell health.

Healthy fats form the structure of every cell membrane in your body. They determine how flexible, stable, and communicative your cells are. They also fuel mitochondria (your cells' power plants), regulate inflammation, support hormone production, and feed your brain, which is roughly 60 percent fat.

When we replace fat with refined carbohydrates and sugar, as the low-fat era encouraged, blood sugar spikes, insulin rises, and inflammation increases. Ironically, this leads to the very metabolic problems fat was accused of causing.

Research shows that essential fatty acids (like omega-3s and omega-6s) help balance inflammation, improve insulin sensitivity, and support healthy metabolism and brain function.

It's not fat itself that's the issue, it's the type of fat and how that fat interacts with your body.

A diet rich in trans fats or seed oils combined with high sugar intake is harmful. But natural fats (like olive oil, avocado, butter, coconut oil, nuts, seeds, beef and wild fish) are profoundly nourishing.

Sugar: the hidden stressor

Sugar and carbs are not evil. Glucose is actually one of your body's main fuel sources.

But the issue isn't the molecule, it's the dose, form, and frequency.

In traditional diets, sugar came from fruit, honey, and whole foods, occasional, seasonal, and balanced by fibre and fat. Today, sugar and carbs show up everywhere, from breads to sauces, dressings, yogurts, protein bars, "healthy" snacks, even salt-seasoned foods.

This constant intake means our bloodstream is never without glucose.

That keeps insulin (the hormone that ushers sugar into cells) chronically elevated, and over time, cells stop responding properly. This state, called insulin resistance, is a root cause of fatigue, hormonal imbalance, inflammation, and metabolic diseases.

When cells are flooded with too much sugar, mitochondria get overloaded and stressed, energy production becomes inefficient, oxidative stress and inflammation increase, fat begins to accumulate in the liver and muscles, and the nervous system shifts toward fight-or-flight mode.

Eventually, your metabolism, the way your cells make energy, becomes dysfunctional, not because of fat or salt, but because your cells are overwhelmed by sugar.

The cellular connection: when metabolism loses coherence

Your body is constantly seeking balance, or homeostasis.

When sugar intake stays high and minerals and fats are low, cells lose their ability to regulate energy efficiently. This imbalance can lead to poor mitochondrial function, sluggish metabolism, hormonal dysregulation, mood swings and anxiety, and chronic fatigue and inflammation.

Salt and fat help stabilize this system. Sugar, especially refined and frequent sugar, overstimulates it.

The reframe: food as information

This isn't about labelling foods as good or bad.

It's about remembering that everything you eat is information for your body. Fat and salt tell your body, "You're safe, nourished, grounded." Sugar and carbs, in excess, tell your body, "Emergency fuel incoming," and over time that keeps your nervous system stuck in alert mode.

To restore coherence and balance: include minerals and electrolytes daily, adding unrefined sea salt or mineral drops to your water. Eat fat with every meal, think avocado, nuts, olive oil, or grass-fed butter. Balance your plate, pairing carbs with protein, fat, and fibre to slow glucose spikes. Reduce frequency, giving your system breaks between meals to reset insulin and burn fat. And listen to your body, noticing how different foods affect your energy, clarity, and mood.

This awareness is how we rebuild a healthy metabolism and a healthy relationship with food.

As you move through the week, start noticing how your body feels after you eat, not from a place of judgment, but curiosity. Tune in to your energy, mood, and focus. Your body's always communicating what it needs; we've just been taught to tune it out. Rebuilding that connection, through real food, presence, and nourishment, is how we come back into coherence. Small shifts here create big changes in how your cells, your energy, and your whole system operate.

The Works That Shaped This Letter

1. Dikalov S., Panov A., Dikalova A. Critical Role of Mitochondrial Fatty Acid Metabolism in Normal Cell Function and Pathological Conditions. Int J Mol Sci. 2024;25(12):6498.
2. Diniz, P. The Role of Dietary Carbohydrates in Glucose Metabolism and Insulin Sensitivity. Insights in Nutrition and Metabolism. 2024;8(5):229.
3. Wolever, T. M. S. Dietary Carbohydrates and Insulin Action in Humans. Br J Nutr. 2007;97(6):1030–1041.
4. Salt and Sodium. Harvard T.H. Chan School of Public Health. 2024.
5. CDC. Effects of Sodium and Potassium. January 31, 2024.
6. Fatty Acids Consumption: The Role of Metabolic Aspects Involved in Obesity and Its Associated Disorders. Front Endocrinol. 2018.
7. NIA Health. The Destructive Modern Diet. 2024.
8. Healthline. Is Salt Bad for You? 2024.
9. Mayo Clinic. Sodium: How to Tame Your Salt Habit. 2024.