Ultra-processed foods

Ultra-processed foods are industrially produced foods that undergo several manufacturing processes and often contain additives.

For a broader context, see the complete guide to proper nutrition — a fundamental guide from the expert team at Sport Zona.

What it is

Ultra-processed foods (UPFs), also known as hyper-processed foods, represent a broad category of products that have undergone significant industrial processing. They are characterized by the presence of ingredients not typically used in home cooking, such as hydrogenated fats, modified starches, high-fructose corn syrup, and synthetic flavorings, colorings, and preservatives. The goal of these processes is to enhance the taste, texture, shelf life, and low cost of the products, while often reducing the content of fiber, vitamins, and minerals.

Biochemically, UPFs are often distinguished by a high concentration of refined carbohydrates, saturated and trans fats, and a significant amount of sodium. They stimulate the brain's reward centers, which can lead to overconsumption and the development of dependencies. Unlike minimally processed foods (such as fruits, vegetables, meat), which retain much of their natural nutritional structure, UPFs are formulated to be "hyper-palatable" – meaning extremely tasty and satisfying, but often with low nutritional value.

How it works

The mechanism of ultra-processed foods affects the human body on several levels, often negatively. The high content of rapidly digestible carbohydrates (such as sucrose, high-fructose corn syrup) leads to a sharp rise in blood sugar and subsequent insulin release. This rapid bodily reaction, combined with low fiber content (which slows absorption), can lead to frequent fluctuations in energy levels and increased hunger shortly after.

Furthermore, added chemicals and emulsifiers can affect the gut microbiome, disrupting the balance of beneficial bacteria. This, in turn, is linked to inflammatory processes and potential worsening of digestion and nutrient absorption. High sodium levels contribute to fluid retention and increased blood pressure, while trans fats, commonly found in UPFs, are associated with an increased risk of cardiovascular diseases. In summary, UPFs act by:

• High glycemic load, leading to insulin spikes.
• Distortion of the gut microbiome.
• High content of sodium and unhealthy fats.
• Low nutrient density.

Why it matters for athletes

For athletes, the consumption of ultra-processed foods has a direct and significant impact on athletic performance, recovery, and overall health. Maintaining an optimal diet is essential for achieving training goals, and UPFs often contradict these needs. They typically provide "empty calories" – high energy intake without adequate micronutrients (vitamins, minerals), antioxidants, and fiber. This deficiency can lead to deficits that compromise the immune system, energy metabolism, and cellular recovery after intense training.

For example, while an athlete may need 1.6-2.2 grams of protein per kilogram of body weight daily for muscle growth and recovery, UPFs are often low in high-quality protein. Instead, they are abundant in fast sugars, which lead to a short-term energy surge followed by a crash, which is undesirable during prolonged training or competitions. For athletes striving for peak performance, maintaining stable blood sugar and ensuring adequate nutrient intake is critical. Excessive consumption of UPFs can lead to increased body fat, inflammation, and impaired recovery, directly affecting strength, endurance, and the ability to adapt to training stress.

Related terms

• Fructose — A common sweetener in ultra-processed foods, which can contribute to fatty liver disease and insulin resistance with excessive intake.
• Glycemic Index (GI) — A measure indicating how quickly a carbohydrate raises blood sugar, with many ultra-processed foods having a high GI.
• Maltodextrin — A high-carbohydrate polysaccharide used as a filler and thickener in ultra-processed foods, rapidly digestible and with a high glycemic index.
• Sucrose — Also known as table sugar, it is a common additive in ultra-processed foods, contributing to their high caloric and glycemic load.