Nutrition — What the Body Is Built On

Are You Feeding Your Body, or Fueling Its Ability to Make Energy?

Now This Is Food Your Body Can Love

Understanding how food becomes vitality, why calories tell only part of the story, and what our cells need to keep us going.

We have all experienced days when our energy seems to disappear long before the day is finished. We may have eaten breakfast, enjoyed a substantial lunch, and consumed enough food to meet our daily requirements, yet by mid-afternoon we find ourselves searching for something to help us keep going. Sometimes we reach for another cup of tea or coffee, something sweet, or a snack that promises a quick lift. It raises an interesting question: if food provides our body with energy, why doesn't eating more always leave us feeling more energetic?

The answer begins with understanding that the energy contained in food and the energy our bodies can actually use are not quite the same thing. Food supplies the raw materials, but our bodies must digest, absorb, transport, and transform those materials before they become useful to our cells. Every part of that process depends on a remarkable collection of nutrients, enzymes, chemical reactions, and physiological systems working together throughout the day.

This distinction takes us beyond the familiar conversation about calories and opens a much more useful discussion about the quality of the food we eat, the nutrients we receive, and our body's ability to turn nourishment into vitality.

The Remarkable Work Happening Inside Our Cells

Deep within most of our cells are structures called mitochondria, often described as the body's energy-producing centres. Their primary role is to help convert the energy from carbohydrates, fats, and, when needed, proteins into a usable form called adenosine triphosphate, or ATP.

ATP is essential to nearly everything we do. Our muscles require it to contract; our nervous system depends on it to maintain electrical activity and transmit signals; and countless processes involved in repairing, maintaining, and renewing our tissues rely on a continuous supply. Even while we are sleeping, the body remains remarkably active, regulating temperature, circulating blood, maintaining organ function, and performing the ongoing work that keeps us alive.

What makes this especially fascinating from a nutritional perspective is that mitochondria cannot carry out their work effectively using calories alone. They depend on a network of supporting nutrients, including B vitamins, magnesium, iron, and other minerals that participate in the reactions involved in energy metabolism.

The B vitamins provide an excellent example of this cooperation. Thiamine, riboflavin, and niacin are involved in helping the body transform food into usable energy through their roles as components of important coenzymes. Magnesium participates in hundreds of enzymatic reactions and is closely associated with the activity of ATP. Iron supports oxygen transport through the blood and plays a role in cellular energy production, while adequate protein supplies amino acids needed to build and maintain enzymes and tissues.

These nutrients do not work independently of one another. They participate in an interconnected system in which the availability of one nutrient can influence the body's ability to perform a particular function.

This helps explain why two meals containing approximately the same number of calories may contribute very different amounts of useful nutrition. A meal consisting mainly of refined carbohydrates may provide substantial energy in the form of calories, while offering relatively limited quantities of fibre and certain micronutrients. A meal built around vegetables, legumes, quality protein, and minimally processed grains can provide energy alongside many of the nutritional components involved in putting that energy to work.

The lesson is not that every meal must contain every vitamin and mineral. Our bodies are designed to use nutrients from the varied foods we eat over time. It is that the nutritional value of a meal cannot be understood from its calorie content alone.

When Food Provides Energy but Doesn't Sustain Us

One of the most noticeable ways we experience the relationship between food and vitality is through changes in our energy and appetite following a meal.

Carbohydrates are an important source of fuel, particularly for the brain and working muscles. During digestion, many carbohydrates are broken down into sugars that enter the bloodstream and become available for the body's use. Insulin helps regulate the movement and storage of glucose, supporting the body's ability to meet its changing energy requirements.

However, the composition of a meal influences how quickly those carbohydrates are digested and absorbed. Highly refined foods containing substantial amounts of rapidly digested starches or added sugars can produce a faster rise in blood glucose, particularly when eaten without other foods that slow digestion. Meals containing fibre, protein, and healthy fats generally produce a more gradual digestive and metabolic response.

This doesn't mean that carbohydrates are undesirable or that every rise in blood sugar is harmful. Our bodies are designed to respond to food, and glucose regulation is a normal part of healthy metabolism. The greater consideration is whether our meals provide the nourishment and satisfaction needed to carry us comfortably through our daily activities.

Consider the difference between having a piece of white toast with jam for breakfast and enjoying a bowl of steel-cut oatmeal accompanied by plain Greek yogurt and fruit. Both provide carbohydrate energy, but the second meal also offers more protein, fibre, and a wider variety of nutrients that contribute to fullness and nourishment.

The timing of our meals also deserves attention. Going for long periods without eating may work comfortably for some people, while others find that hunger, concentration, and energy become increasingly difficult to manage. Arriving at supper excessively hungry can influence how much we eat and how quickly we eat it, sometimes leaving us feeling uncomfortable rather than restored.

Learning to recognize our individual responses to food can be more valuable than following rigid rules about when or how often everyone should eat.

The Energy of Food: More Than a Nutritional Calculation

For generations, traditional healing systems have considered food through a broader understanding than its chemical composition alone. In Traditional Chinese Medicine, for example, foods are understood in relation to qualities such as warming, cooling, and their influence on the body's balance. Ayurvedic traditions also consider the characteristics of food, the season in which it is eaten, the method of preparation, and the individual's constitution.

These traditions use concepts of vitality and energy that are different from the calories and ATP measured in nutritional science. Although they should not be confused with the biochemical processes of energy production, they offer another perspective on how we experience nourishment.

Think about the difference between eating a freshly prepared vegetable soup on a cold autumn afternoon and hurriedly consuming a packaged meal while distracted by work. Both may provide adequate calories, and a packaged meal can have nutritious ingredients. Yet the experience of eating may be quite different, influenced by temperature, aroma, texture, attention, and the way the food has been prepared.

The sensory experience of food is part of digestion and appetite regulation. The sight, smell, and anticipation of a meal can stimulate digestive responses before the first mouthful is swallowed. Eating in a more settled state may also help us recognize hunger, fullness, and satisfaction more readily.

There is something worth considering here for those who already approach wellness through an energetic perspective. The foods we choose do more than supply nutrients; they also become part of our daily experiences, cultural traditions, relationships, and connection with the natural world.

Seasonal eating offers a particularly meaningful opportunity to explore that relationship. Autumn brings squash, root vegetables, apples, cabbage, and the final harvests from our gardens and local farms. These foods offer an abundance of flavours, colours, fibres, and plant compounds that can contribute to a varied diet, while reconnecting us with the natural growing cycles of our region.

We can appreciate a freshly harvested carrot for its nutritional value and the experience of eating food that has been grown and prepared with care from each season.

What Happens When We Keep Asking Our Bodies for More?

There is another important part of the energy conversation that is frequently overlooked. We often respond to fatigue by asking our bodies to produce more energy without considering whether we have given them the opportunity to recover.

Food is essential, but it is not the only factor influencing how energetic we feel. Sleep, physical activity, hydration, ongoing stress, health conditions, and the demands placed upon our nervous system all contribute to our experience of vitality.

A nourishing meal cannot compensate indefinitely for inadequate sleep, just as a vitamin supplement cannot necessarily correct the effects of continuous emotional strain. Persistent tiredness may also be associated with concerns such as iron deficiency, thyroid dysfunction, or other conditions that deserve appropriate investigation.

From an orthomolecular nutrition perspective, this reinforces the importance of examining the individual's nutritional needs rather than assuming everyone requires exactly the same approach. Nutrient status, dietary patterns, digestive function, and individual circumstances can all influence whether someone's nutritional requirements are being met.

It is also important to recognize that more is not always better. The objective is to identify and address genuine nutritional needs while supporting the body with a varied, nourishing diet.

We may gain more from examining the way we eat throughout the day, the balance of our meals, and whether we are allowing adequate time for rest than we will from continually searching for the next product that promises to increase our energy.

 A Different Way to Look at Your Plate

During the coming week, rather than judging your meals by calories or portion sizes alone, consider what each meal is contributing to the work taking place within your body.

Look for a meaningful source of protein to support the maintenance and renewal of tissues, a variety of vegetables or fruits that contribute vitamins, minerals, fibre, and beneficial plant compounds, and an appropriate amount of carbohydrate and fat to provide fuel and satisfaction.

Pay attention to how you feel in the hours afterward. Are you comfortably satisfied? Can you concentrate on your activities? Do you become unusually hungry soon after eating, or does the meal provide nourishment that carries you through until you are ready to eat again?

One meal will not provide every answer, and changes in energy cannot always be traced directly to something we have eaten. Over several days, however, patterns may become apparent that help us understand our individual nutritional needs.

Our bodies are continually transforming the food we eat into the energy required for movement, thought, repair, and the countless functions that sustain life. Supporting that process involves more than consuming sufficient calories; it means providing a wide variety of nutrients, developing eating patterns that work for our individual circumstances, and recognizing the value of both nourishment and recovery.

The question worth asking at our next meal may not be how much energy the food contains, but how well we are nourishing the remarkable system responsible for turning that food into life.

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From Our Kitchen:

Recipe of the week: Warm Harvest Lentil & Roasted Squash Bowls

With wilted greens and a creamy lemon-herb dressing

Autumn offers some of the most satisfying ingredients for preparing meals that provide both nourishment and comfort. This harvest bowl combines the natural sweetness of roasted squash with the earthy flavour of lentils, tender greens, and a creamy dressing made with Greek yogurt, lemon, and fresh herbs. The combination provides plant protein, fibre, complex carbohydrates, and a variety of micronutrients involved in maintaining normal body function and energy metabolism.

Serves: 4

Preparation: 15 minutes

Cooking: 30–35 minutes

Ingredients

For the harvest bowls

- 1 medium butternut squash (approximately 800 g before peeling), peeled and cut into bite-sized cubes

- 1 tablespoon olive oil

- ½ teaspoon dried thyme

- ½ teaspoon smoked paprika

- ¼ teaspoon sea salt, or to taste

- 1 cup dry green or brown lentils, rinsed and sorted

- 3 cups water or unsalted vegetable broth, plus more if needed

- 1 small red onion, finely chopped

- 2 cloves garlic, minced

- 4 packed cups baby spinach or chopped kale

- 1 tablespoon olive oil, for sautéing

- Freshly ground black pepper, to taste

For the lemon-herb dressing

- ½ cup plain Greek yogurt

- 2 tablespoons fresh lemon juice

- 1 tablespoon extra-virgin olive oil

- 1 tablespoon chopped fresh parsley

- 1 teaspoon Dijon mustard

- 1 small clove garlic, finely grated

- 1–3 tablespoons water, to adjust consistency

- Sea salt and black pepper, to taste

Preparation

1. Roast the squash. Preheat your oven to 425°F (220°C). Line a baking sheet with parchment paper and spread the squash cubes in a single layer. Toss with one tablespoon of olive oil, thyme, smoked paprika, and sea salt. Roast for approximately 25–30 minutes, turning halfway through, until the squash is tender and beginning to caramelize around the edges.

2. Cook the lentils. While the squash is roasting, place the rinsed lentils in a saucepan with three cups of water or vegetable broth. Bring to a gentle boil, reduce the heat, and simmer uncovered or partially covered for approximately 20–30 minutes, until the lentils are tender but still hold their shape. Add a little more liquid if necessary, then drain any excess once they are cooked. If using salted broth, adjust the seasoning at the end.

3. Prepare the vegetables. Warm one tablespoon of olive oil in a large skillet over medium heat. Add the chopped red onion and cook for approximately four minutes, until softened. Stir in the garlic and continue cooking for another minute. Add the spinach or kale, stirring gently until the greens have wilted and become tender. Spinach will take only a couple of minutes, while kale may need five minutes and a splash of water.

4. Combine the ingredients. Add the cooked lentils to the skillet with the onions and greens, tossing gently to combine. Season with freshly ground black pepper and additional salt if needed. Keep warm while preparing the dressing.

5. Make the dressing. In a small bowl, whisk together the Greek yogurt, lemon juice, olive oil, parsley, Dijon mustard, and grated garlic. Add water one tablespoon at a time until the dressing reaches a consistency suitable for drizzling. Taste and adjust the seasoning.

6. Assemble the bowls. Divide the warm lentil and vegetable mixture among four bowls, arrange the roasted squash over the top, and finish with a generous spoonful of lemon-herb dressing.

From Our Kitchen

This recipe can be prepared in stages, making it especially useful for busy days. The lentils and roasted squash can be cooked ahead and refrigerated separately for up to three to four days, then reheated before serving. Store the dressing in a covered container in the refrigerator and add it just before eating.

For those who prefer additional animal protein, leftover roasted chicken or turkey can be added to the bowls. For a completely plant-based version, replace the Greek yogurt with an unsweetened plain soy yogurt.

The combination of lentils, vegetables, and squash offers a particularly useful example of how a meal can provide both fuel and the nutrients our bodies need to use it. Lentils contribute protein, iron, folate, and fibre; squash supplies beta-carotene and potassium; and leafy greens add further vitamins, minerals, and plant compounds. The lemon dressing also provides vitamin C, which can help improve the absorption of non-heme iron from plant foods.

A satisfying meal should do more than answer the immediate feeling of hunger. It should contribute to the ongoing work of maintaining the body that carries us through every day.