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How to know if it's sugar? A guide to detection

3 min read

According to the Centers for Disease Control and Prevention (CDC), many Americans consume more than the recommended amount of added sugar daily, often unknowingly. Learning how to know if it's sugar—both table sugar and its many aliases—is a crucial step toward better health and mindful eating.

Quick Summary

This article details methods for identifying sugar in foods and beverages. It covers reading nutrition labels, deciphering ingredient lists for hidden sugars, and recognizing signs of high sugar intake. Practical tips for comparing products and distinguishing between different sweeteners are also included.

Key Points

  • Check the 'Added Sugars' label: Since 2020, nutrition labels explicitly list the amount of sugar added during processing, not just the total sugar.

  • Learn sugar's many aliases: Sugar is often hidden under different names on ingredient lists, including words ending in '-ose,' syrups, and nectars.

  • Use home tests for mystery powders: You can distinguish sugar from salt by observing its properties, such as how it melts under heat or dissolves in water and alcohol.

  • Be aware of high-sugar symptoms: Excessive thirst, chronic fatigue, and dental cavities can all be physical signs of consuming too much sugar.

  • Watch for hidden sugar in savory foods: Sugar can be found in unexpected places like ketchup, salad dressings, and canned soups, not just sweets.

  • Beware of marketing claims: Phrases like 'low-fat' or 'natural' don't guarantee a product is low in sugar, as sugar is often added to replace lost flavor.

In This Article

Decoding the Food Label: A Critical First Step

Identifying sugar, especially the 'added' kind, starts with scrutinizing the nutrition label and ingredient list. Food manufacturers are required by law to list ingredients in descending order by weight, so if sugar or a similar sweetener appears near the top, the product is likely high in sugar.

Finding the 'Added Sugars' Line

Since 2020, FDA-mandated label changes have made it easier for consumers to find out exactly how much sugar has been added. Look for the 'Added Sugars' line under the 'Total Carbohydrates' section on the label. This clearly differentiates between naturally occurring sugars (found in milk or fruit) and those added during processing. A product with 5% or less of the Daily Value for added sugars is considered low, while 20% or more is high.

The Many Disguises of Sugar

Many consumers are unaware of the dozens of different names sugar can hide under on an ingredient list. The most common tactic is to use a variety of terms so no single one is high enough to appear at the very top of the list. Common aliases include words ending in "-ose" (like fructose, sucrose, dextrose), various syrups (such as corn syrup, high-fructose corn syrup, brown rice syrup), nectars and juices (like agave nectar, cane juice, fruit juice concentrates), and natural sweeteners (including honey, maple syrup, and molasses).

Taste, Texture, and Heat: Home Tests

While processed foods require label reading, you can test a mysterious white powder at home to see if it's sugar or salt. A simple test involves observing its behavior when heated.

Comparison Table: Sugar vs. Salt

Characteristic Sugar (Sucrose) Salt (Sodium Chloride)
Taste Sweet Salty
Melting when heated Melts and caramelizes into a brown liquid. Does not melt at cooking temperatures.
Dissolving in water Dissolves readily, especially in warm water. Dissolves readily, but solubility is less affected by temperature.
Dissolving in alcohol More readily soluble in alcohol than salt. Only slightly soluble in alcohol.
Appearance Crystals often have a clear, sparkling quality. Crystals can be duller and more uniform.

Physical Symptoms of High Sugar Intake

Your body can also provide clues that you are consuming too much sugar, especially if it's from added or processed sources. Recognizing these signs can help you connect your dietary choices with your physical well-being. Symptoms can include chronic fatigue due to blood glucose fluctuations, excessive thirst and frequent urination as kidneys process excess sugar, weight gain from calorie-dense, nutrient-poor sugary foods, dental cavities from bacteria feeding on sugar, and potentially skin issues like acne.

Avoiding Hidden Sugars in Unexpected Foods

Recognizing sugar in foods that don't taste explicitly sweet is a major challenge. Sugar is added to many processed foods to enhance flavor, balance acidity, or improve texture. Common culprits include condiments and sauces (like ketchup, barbecue sauce), canned soups and stews, pre-packaged bread, and seemingly healthy options like flavored yogurts, granola bars, and fruit juices. Additionally, low-fat products often contain added sugar to compensate for the flavor lost by removing fat.

By being vigilant about reading labels and understanding where sugar hides, you can make more informed choices about your diet. For personalized advice, you can consult with a registered dietitian or healthcare provider.

Conclusion

Knowing how to spot sugar involves more than avoiding obvious sweets; it requires understanding food labels and identifying sugar's many hidden forms. By checking the Added Sugars line, recognizing sugar aliases, and paying attention to your body's physical cues, you can manage your sugar intake. Simple steps like choosing unsweetened products and cooking at home can significantly help. For health concerns related to high sugar consumption, consulting a healthcare professional is recommended.

Continental Hospitals offers helpful tips on spotting hidden sugars in food.

Frequently Asked Questions

Natural sugar is found in foods like fruits and milk, while added sugar is put into food during processing. Since 2020, US food labels separate the two, making it easier to track added sugar intake.

You can perform a simple heat test. Sugar will melt and caramelize when heated, while salt will not. You can also test its solubility in water and alcohol; sugar is more soluble in alcohol than salt.

Look for ingredients that end in '-ose' (like dextrose or fructose), syrups (such as corn or rice syrup), nectars (agave nectar), and fruit juice concentrates.

Yes, high sugar intake can cause your blood sugar to spike and then crash, leading to feelings of fatigue, low energy, and sluggishness.

Not entirely. Manufacturers often add extra sugar to low-fat or fat-free products to compensate for the flavor lost by removing the fat. You should always check the 'Added Sugars' section of the nutrition label.

Excess sugar in your bloodstream triggers your kidneys to work overtime to filter it out. This process requires more fluid, which is why your body signals increased thirst.

Compare the 'Added Sugars' line on the nutrition label and check the ingredient list for sugar aliases. Be mindful of serving sizes, as a small serving can make a product appear low in sugar.

References

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Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.