For many years, the nutritional debate has been about calories, fat, sugar, and salt. But accumulating scientific evidence is beginning to indicate that the problem is much deeper than just nutritional content.
The question that researchers are asking today is no longer just: How much fat or sugar does a food contain? Rather: What happens to the human body when real food is replaced with artificial formulas designed for excessive consumption? And the answer is becoming increasingly worrying.
Just a few decades ago, most meals were prepared with obvious, recognizable ingredients: vegetables, grains, legumes, meat, milk, olive oil, spices, and seasonal fruits.
Today, store shelves are increasingly stocked with products made in factories rather than in kitchens; Carefully packaged foods, designed to be extraordinarily delicious, easy to consume, and able to last for months.
These products, known as “ultra-processed foods,” are no longer just a marginal part of the modern diet. In many countries, it represents more than half of the daily calories consumed.
Frozen pizza, sugary breakfast cereals, packaged snacks, soft drinks, sausages, industrial pastries, instant noodles, and even many products marketed as health or sports all fall into this category.
Beyond calories: a new health crisis
Ultra-processed foods are linked to a wide range of cardiac and metabolic disorders. Numerous studies have linked high consumption of these products to obesity, high blood pressure, lipid disorders, chronic inflammation, type 2 diabetes, and chronic kidney disease. They are all major factors that lead to heart and arterial diseases.
What is more dangerous is that the relationship does not stop at risk factors only. High consumption of these foods has also been associated with an increased risk of heart disease, heart failure, arrhythmias, strokes, and higher cardiovascular mortality.
What is increasingly interesting to scientists is that these effects cannot always be explained solely by increased calories, sugar or fat. Two diets may contain approximately the same amount of fat, carbohydrates and protein, but their physiological effects may differ greatly depending on the degree of industrial processing. This means that the structure of the food itself may be as important as its ingredients.
What makes these foods different?
Not all processed foods are harmful. Humans have been processing food for thousands of years through cooking, fermentation, drying, and making cheese and bread. The treatment itself is not the problem. The problem is excessive industrial processing.
Many of these products are made from materials extracted and refined from natural foods, such as isolated starches, refined oils, separated proteins, artificial sweeteners, flavors, emulsifiers, and colorings, and then reformulated into products carefully designed to be both delicious and easy to consume.
These products are often characterized by:
- Fast digestion and absorption
- Poor in fibre
- Dense in calories
- Highly marketable
- Designed to override natural satiety mechanisms
Some researchers believe that these foods may change eating behavior itself, by causing people to eat more quickly, feel less full, and consume larger amounts of food. Others point to the role of chronic low-grade inflammation, gut microbiome disruption, glucose dysregulation, and the effect of some artificial additives on metabolic function.
Although the exact mechanisms are still being studied, the epidemiological signal has become difficult to ignore.
Children pay the price
Even more worrying is that the effects of ultra-processed foods are no longer limited to adults, but are increasingly being seen in children and teenagers. Today, doctors are witnessing an alarming rise in cases of type 2 diabetes among age groups in which this disease was very rare decades ago, in addition to the accelerating spread of fatty liver in children, a disease that was previously considered primarily associated with adults.
This early exposure to obesity, insulin resistance, chronic inflammation, and lipid disorders means that many children enter adulthood already carrying the biological seeds of cardiovascular disease.
In other words, an entire generation may begin its metabolic life exhausted since childhood, which portends the early appearance of heart disease, strokes, and high blood pressure at younger ages than previous generations experienced.
The heart pays the price
The cardiovascular system appears to be one of the systems most affected by the consequences of chronic dependence on ultra-processed foods. Obesity and insulin resistance increase the burden on the heart and accelerate damage to blood vessels.
Excess salt raises blood pressure. Chronic inflammation accelerates atherosclerosis. Lipid disorders affect lipoprotein metabolism. Over time, all these disorders intersect to lead to cardiovascular disease.
For this reason, many scientists no longer view these products as simply unhealthy foods, but rather as part of an entire food environment that drives chronic disease.
The matter becomes more serious when we know that cardiovascular diseases are still the number one cause of death globally. This does not mean that eating ultra-processed foods occasionally or occasionally will directly lead to illness. The human body has a great ability to adapt.
But the real danger appears when these products become a daily basis of the diet, and when chronic exposure to them becomes a permanent part of life for many years.
Why do health messages sometimes fail?
One of the big problems is that the modern consumer lives in a huge food and marketing chaos. Many ultra-processed foods are marketed as healthy because they are low in fat, high in protein, sugar-free or vegetarian.
But these statements may hide the fact that the product is still highly industrialized. A protein bar containing dozens of artificial additives may still be an ultra-processed product. Breakfast cereals fortified with vitamins may continue to cause rapid increases in blood sugar and poor satiety.
Even some low-calorie products may contribute to the establishment of unhealthy dietary patterns.
Nutrition science has sometimes become overly reductionist, reducing food to separate components rather than looking at food as an integrated structure and comprehensive dietary pattern. This has allowed some industrial products to acquire a misleading health halo.
The role of health policies
Countering the rise of ultra-processed foods cannot rely solely on advice for people to eat better. The modern food environment is powerfully shaped by economics, advertising, the food industry, and urban lifestyles.
Therefore, many public health experts call for:
- Establish clearer food labels
- Limit the marketing of these products to children
- Promoting nutrition education
- Encourage the consumption of minimally processed foods
- Develop policies that make healthy food more available and less expensive.
Some countries have already begun adopting warning labels on product fronts or imposing taxes on some unhealthy food products, and some preliminary studies indicate that these policies may affect consumer behavior. But awareness alone may not be enough if unhealthy products remain cheaper, more accessible and more prominent in advertising than real food.
Back to real food
Talking about ultra-processed foods does not mean glorifying the past or advocating dietary extremism. Rather, it means recognizing that human biology evolved in the context of real food, not in the context of artificial formulations designed in laboratories.
The solution is not fear, nor food obsession, nor ideological wars over nutrition. Rather, a gradual return to dietary patterns based mainly on minimally processed foods: vegetables, fruits, legumes, nuts, fish, eggs, milk and its derivatives, and traditional home-prepared meals.
Ironically, in an era in which humanity has reached enormous levels of technological advancement, one of the most important health messages may be very simple: the further away food deviates from its natural form, the further away we may be from our metabolic health.
