Finally Explained: Natural Sugars vs Added Sugars

By Published On: 15 March 2026Categories: Health & Nutrition

Sugar is often talked about as if it’s one single thing, but in reality, where sugar comes from, and how it’s delivered in the body, matters. Sugars that occur naturally in whole foods like fruit are consumed alongside nutrients and bioactive compounds, while added sugars are introduced during processing and provide sweetness without the same nutritional context.

At Bradley’s Juice, we believe in being clear about that difference. Our drinks contain only sugars that occur naturally in fruit, not added refined sugars. The exceptions are our ginger beer, where a small amount of sugar is required to support the fermentation process, our elderflower presse and lemon & raspberry sparkling juice—we’re open about this and transparent in explaining.

In this article, we’ll break down the difference between natural and added sugars, explain how the body responds to each, and explore why fruit and fruit juice are not nutritionally equivalent to sugar-sweetened drinks. By the end, you’ll have a clearer, more practical understanding of sugar – one that focuses on quality, context and balance rather than blanket avoidance.

What Are Natural Sugars?

Natural sugars are sugars that occur intrinsically in whole, unprocessed foods such as fruits, vegetables and dairy. In fruit, these sugars are part of the plant’s cellular structure and are not isolated or refined. When fruit is eaten whole, or even when it is pressed or blended into juice, the sugars present are those that come directly from the fruit itself, primarily fructose, glucose and sucrose.

What Are Examples of Natural Sugars?

The main types of natural sugars found in foods include:

  • Fructose – the primary sugar in fruit
  • Glucose – a simple sugar used by the body for immediate energy
  • Sucrose – a combination of glucose and fructose that occurs naturally in many fruits and vegetables
  • Lactose – the naturally occurring sugar found in milk and dairy products

These sugars exist naturally within the structure of whole foods and are not added during processing.

What makes natural sugars fundamentally different from added sugars is the context in which they are consumed. They never arrive in isolation. Instead, they are packaged within the food’s natural matrix and delivered alongside a range of beneficial compounds, including:

  • Vitamins, such as vitamin C, which supports immune function and helps counter oxidative stress
  • Minerals, like potassium, which plays a role in fluid balance and cardiovascular health
  • Polyphenols and antioxidants, which can reduce inflammation and support metabolic health
  • Organic acids, which influence digestion, slow gastric emptying and affect how quickly sugars are absorbed

This combination significantly alters how the body processes natural sugars. The presence of fibre (in whole fruit), micronutrients and bioactive compounds slows digestion and absorption, leading to a more gradual rise in blood glucose and insulin. As a result, natural sugars are metabolised differently than refined or added sugars, supporting satiety and reducing the likelihood of rapid blood sugar spikes.

What Are Added Sugars?

Added sugars are sugars and syrups that are introduced to foods during processing, preparation or manufacturing rather than being naturally present in the original ingredient. They are typically extracted, refined or chemically altered forms of sugar that are added deliberately to enhance a product’s taste, texture or stability.

Common examples of added sugars include:

  • White or brown sugar, refined from sugar cane or sugar beet
  • Glucose syrup, often used to improve texture and prevent crystallisation
  • High-fructose corn syrup, a liquid sweetener widely used in processed foods and soft drinks
  • Invert sugar, a mixture of glucose and fructose that increases sweetness and moisture retention

Unlike natural sugars, added sugars are not embedded within a whole food structure. They are consumed in a concentrated, isolated form, without the accompanying fibre, vitamins, minerals or protective plant compounds found in whole foods. As a result, they are rapidly digested and absorbed, often causing sharp spikes in blood glucose and insulin levels. That’s why diabetics have to consume added sugars in moderation.

Added sugars are primarily included to improve sweetness, extend shelf life or create a more appealing mouthfeel. While they do provide energy in the form of calories, they offer little to no nutritional value beyond that energy. Frequent consumption can displace more nutrient-dense foods in the diet and, over time, contribute to metabolic stress when eaten in excess.

Why Sugar in Fruit Isn’t the Same as Added Sugar

When sugar is consumed in isolation, such as in sweetened drinks or highly processed foods, it is absorbed quickly, often leading to rapid spikes in blood glucose and insulin. This happens because refined sugars are delivered without the natural components that slow digestion or modulate metabolic responses.

In fruit, sugars are consumed as part of a broader biological package. Whether the fruit is eaten whole or consumed as juice, these sugars are accompanied by naturally occurring compounds that influence how the body processes them. Organic acids found in fruit can slow gastric emptying, helping regulate the rate at which sugar enters the bloodstream. Polyphenols and other plant compounds can interact with digestive enzymes and glucose transporters, influencing glucose metabolism and insulin response. Naturally occurring vitamins and minerals also support the metabolic pathways involved in carbohydrate processing.

Whole fruit offers an additional advantage through its intact fibre structure, which further slows digestion and enhances satiety. Fruit juice lacks much of this fibre, meaning sugars are absorbed more quickly than from whole fruit – but still not in the same way as refined sugars added to drinks. Even without fibre, fruit juice retains many of the organic acids, micronutrients and bioactive compounds that differentiate fruit-derived sugars from added sugars.

As a result, research shows that sugars consumed as part of fruit—whether whole or juiced—generally produce a more moderate glycaemic response than refined sugars added to beverages. The key distinction is not simply the physical form of the fruit, but the presence or absence of the natural food matrix that shapes how sugar behaves in the body.

In short, fruit changes the metabolic story of sugar. Whole fruit does this most effectively, but fruit juice still differs meaningfully from drinks sweetened with added sugars.

Fruit Juice Is More Than Just Sugar

Reducing fruit juice to “just sugar” oversimplifies its nutritional role and ignores the broader context in which those sugars are consumed. While 100% fruit juice does contain naturally occurring sugars, it also delivers a range of nutrients and bioactive compounds that contribute to overall dietary quality.

In reasonable portions, 100% fruit juice can support hydration and provide important micronutrients, including potassium, which is essential for muscle contraction and nerve signalling, and vitamin C, which plays a key role in immune function and antioxidant defence. Fruit juice also contains naturally occurring plant compounds, such as polyphenols, that have been linked to reduced inflammation and improved metabolic health.

Importantly, evidence from large population studies consistently shows that whole fruit and 100% fruit juice are not associated with the same negative health outcomes as sugar-sweetened beverages. Treating fruit juice as nutritionally equivalent to soft drinks fails to account for these meaningful differences in composition and physiological effects.

This does not mean fruit juice should replace whole fruit, but it does mean it deserves to be evaluated based on what it actually contains—not just its sugar content in isolation.

Added Sugars and Health Outcomes

High intakes of added sugars, particularly from soft drinks and other sugar-sweetened beverages, have been consistently linked to adverse health outcomes. These include an increased risk of obesity, type 2 diabetes and cardiovascular disease. The strongest associations appear when sugars are consumed in foods and drinks that provide little to no nutritional value beyond calories.

Added sugars are rapidly absorbed and often consumed in large quantities, making it easy to exceed energy needs without promoting satiety or delivering essential nutrients. Over time, this pattern can contribute to metabolic strain and increased disease risk.

Fruit juice, when consumed in reasonable portions, does not show the same risk profile. Unlike sugar-sweetened beverages, it contains naturally occurring vitamins, minerals and bioactive compounds that influence how the body processes its sugars. This nutritional context helps explain why fruit juice is not consistently associated with the same long-term health risks as drinks sweetened with added sugars.

The distinction matters. Health outcomes are shaped not just by the presence of sugar, but by the type of sugar, the food or drink it comes from and the broader dietary pattern in which it is consumed.

Portion Size Still Matters

While natural sugars are different from added sugars, balance is still essential. Even nutrient-containing foods and drinks are best enjoyed in appropriate portions as part of an overall healthy diet. The goal isn’t to avoid sweetness altogether, but to be mindful of how much and how often it’s consumed and in what form.

At Bradley’s Juice, this principle shapes how our drinks are made. We focus on honest portion sizes, real fruit flavour without excessive sweetness and products designed for everyday enjoyment rather than sugar overload. It’s about quality and context, not extremes or restriction.

Why Bradley’s Juice Uses Only Naturally Occurring Sugars

We don’t add sugar because we don’t need to. By using real fruit and careful processing, we allow the fruit’s natural sweetness to speak for itself. This approach keeps ingredient lists short, flavours authentic and the nutritional profile aligned with the fruit from which the juice comes.

Rather than chasing maximum sweetness, the emphasis is on balance—creating drinks that taste good, feel satisfying and fit naturally into everyday life.

Conclusion

Natural sugars found in fruit and fruit juice are not the same as added sugars. They come packaged with vitamins, minerals and bioactive compounds, are metabolised differently by the body, and can play a role in a balanced diet when consumed sensibly. Added sugars, by contrast, provide sweetness without substance and are most strongly linked to negative health outcomes when consumed in excess.

Choosing drinks made with real fruit and no added sugars is a simple, practical way to support better everyday nutrition without sacrificing taste. The difference isn’t about demonising sugar, but about understanding where it comes from and how it’s consumed.

About the Author: Robert Bradley

Robert Bradley holds a BSc (Hons) in Human Nutrition from the University of Worcester. Alongside his academic background, he is a Level 2 Personal Trainer and Level 2 Cricket Coach, with experience working with the University of Johannesburg providing nutritional advice and coaching support.