The Sweet Trap: How Too Much Sugar Can Lead to Weight Gain and Obesity

What is the difference between natural sugar and added sugar?

Sugars occur naturally in foods such as fruit and milk. Added sugars are put into foods or drinks during manufacturing, cooking or preparation. WHO uses the term “free sugars” for added sugars plus sugars naturally present in honey, syrups, fruit juices and fruit juice concentrates. ^[5]

This distinction matters because a piece of whole fruit also provides fibre, water, vitamins and other nutrients, while a sweetened drink can deliver a large amount of sugar and calories very quickly. That is why the goal is not to fear every food containing sugar, but to reduce the foods and drinks that add a lot of free or added sugar without much nutritional value. ^{[3, 4, 5]}

Does sugar directly turn into body fat?

Body weight is influenced by overall energy balance over time. When you regularly take in more energy than your body uses, the extra energy can be stored, including as body fat. Foods and drinks high in added sugar can make this energy surplus easier to reach because they may be energy-dense, easy to overconsume and low in fibre or other nutrients that support fullness. ^{[1, 4, 5]}

Sugar is therefore one contributor to obesity risk, not the only cause. Body weight is also influenced by total diet, physical activity, sleep, medicines, genetics, health conditions, stress, environment and other factors.

Why are sugary drinks a particular concern?

Sugary drinks include soft drinks, sweetened fruit drinks, energy and sports drinks, sweetened coffee or tea, syrups, and other beverages with added sugar. In Malaysia, sweetened beverages are commonly consumed as part of everyday drinking habits, including drinks such as sweetened tea, sweetened coffee and 3-in-1 drinks. ^[2]

Frequent consumption can contribute to excess sugar and calorie intake, as sugary drinks are convenient, easy to consume and may not provide the same feeling of fullness as solid foods, making it easy to consume more sugar and calories than intended. Over time, this can contribute to weight gain and obesity. ^[4]

Replacing sugary drinks with plain water or unsweetened beverages is therefore a simple and practical way to reduce added sugar and calorie intake. ^{[3, 4]}

Can eating sugar make you hungrier?

Consuming high amounts of sugar can disrupt our natural appetite control mechanisms. Sugary foods and drinks may not keep us satisfied for long, as they are often low in fibre and protein and may lack the volume needed to promote fullness. In addition, sugar can stimulate the brain’s reward system, increasing the desire for sweet foods. As a result this could potentially contribute to overeating and a cycle of repeated sugar consumption. ^[1]

Choose meals and snacks that include vegetables or fruits, whole grains, protein-rich foods and other minimally processed foods as they tend to provide more fibre, protein and nutrients that can support better satiety. ^[3]

How much sugar is too much?

WHO recommends that free sugars make up less than 10% of total daily energy intake for adults and children. WHO further suggests reducing intake to below 5% of total daily energy intake may provide additional health benefits. ^[5]

Malaysia’s dietary guidance takes a practical approach: limit sugar in foods and drinks, choose plain water regularly and use nutrition information on food labels to make better choices. ^[3]

How can you cut down on added sugar without giving up everything sweet?

• Choose water first.
  Replace soft drinks, sweetened teas, syrups and other sugary beverages with plain water or unsweetened drinks most of the time. ^{[1, 3, 4]}
• Read the label.
  Compare similar products and look for the amount of sugar. Remember that “no added sugar” does not always mean “sugar-free”. ^[3]
• Choose whole fruit more often.
  Whole fruit provides fibre and other nutrients and can satisfy a sweet taste. ^{[1, 3]}
• Reduce sweetness gradually.
  Ask for less sugar in drinks, use less sugar when preparing food at home and give your taste buds time to adapt.
• Keep treats occasional and portion-aware.
  You do not have to ban cake, biscuits or dessert, but smaller portions and less frequent intake can make a meaningful difference.
• Build balanced meals.
  Include vegetables, whole grains or other high-fibre carbohydrates, and an appropriate protein source so meals are more filling and nutritionally complete. ^[3]

What if you are trying to manage your weight?

Reducing added sugar can help lower total calorie intake, particularly if sugary drinks and frequent sweet snacks are a major part of your diet. But healthy weight management works best as an overall plan rather than a single-food rule. Consider meal pattern, portions, physical activity, sleep and any medicines or health conditions that may affect weight.

If you are concerned about your weight, blood sugar or eating habits, speak with a healthcare professional. A CARiNG pharmacist can help you understand nutrition labels, review suitable health-screening options and guide you to the appropriate next step.

Useful resources

• Ministry of Health Malaysia, Nutrition Division – Malaysian Dietary Guidelines
• Centers for Disease Control and Prevention – Sugar-Sweetened Beverage Consumption
• World Health Organization – Healthy Diet

Frequently asked questions about sugar and weight gain

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