Introduction
Sugar is something that features commonly in the contemporary diet. While naturally occurring in some food products like fruits and milk, it can also be added in many manufactured products like desserts, soft drinks, sauces, snacks, and even breakfast items. Although sugar serves an important function in providing the body with glucose for energy, having too much of this free sugar can have a detrimental effect on a person’s health.
Differentiating Added from Free Sugars
Sugars are not all the same in terms of their dietary contexts. Although free sugars that occur in fruits and milk are components of foods which have some nutritional value as well, including fibers, vitamins, minerals, and proteins, added sugars are added to the food during processing.
Examples include table sugar, syrups, sugar-containing drinks, confectionery products, cakes, biscuits, sugary cereals, and various processed foods. The sugar-sweetened beverages have special relevance since they can offer considerable amounts of sugar in addition to not causing satiety like other whole foods.
The literature has time and again veified high consumption of sweetened beverages as an important problem of poor eating habits. An extensive review that covered 47 meta-analyses involving more than 22 million individuals documented compelling evidence on the link between higher consumption of sugar-sweetened beverages and greater risk of developing type 2 diabetes and heart diseases, while other connections were seen to be linked with cavities and liver disease.
Sugar and Body Weight
Dr. Peter Ting of Harley Street Heart & Vascular Centre said, among the most common effects of overconsumption of sugar is the fact that one can put on weight. Products with high sugar content can contribute to the intake of a lot of calories while being rather low in nutritional value. Additionally, the beverages with high sugar content are very easy to consume rapidly and can make it hard to count calories consumed.
In a review, in which a number of meta-analyses were examined, there was found moderate quality of evidence connecting overconsumption of sugar-sweetened drinks to high body mass. In the same review, it was mentioned that there is a link between overconsumption of added sugar and ectopic fat deposition, that is deposition of fat in those places where the excess of fat can be harmful to health.
Effects on Blood Sugar and Risk for Diabetes
Jan Brandrup, CEO of Neurogan Health said, the regular ingestion of a large amount of sugars may contribute to the formation of a diet which predisposes the individual to a higher risk of metabolic diseases. Sugar-sweetened drinks are especially problematic since they contain quickly absorbed carbs without many nutrients such as fiber and protein.
Weight gain due to excessive calorie intake eventually leads to insulin resistance, which occurs when cells react to the hormone with reduced efficiency. It is an important factor in the development of type 2 diabetes. It was proven in the research that there is a link between type 2 diabetes and consumption of sugar-sweetened beverages. In 2024, according to the review, individuals who consumed more of such beverages had greater chances to develop type 2 diabetes.
This means that consumption of one sweet product cannot lead to the development of type 2 diabetes. This issue is associated with the tendency of long-term excessive consumption.
Impact on Cardiovascular Health
The excessive consumption of sugar can influence the health of the cardiovascular system in a negative way as well. The scientific researches dedicated to the influence of dietary sugars show some relationship between sugar consumption and certain cardiovascular outcomes, but its level of certainty depends on the type of sugar, food product, and outcome.
According to the systematic review and meta-analysis of the researches performed among more than 624,000 participants, there is a connection between the increased consumption of sugar and death from cardiovascular diseases; however, the level of certainty of the evidence is low for some endpoints.
Moreover, the large cohort study among more than 109,000 women has shown the correlation between the excessive intake of added sugar and sugar-sweetened beverages and the risks of cardiovascular diseases. Nevertheless, the authors of the research underline the difference in the design of the research which makes the further research of this problem necessary. The excessive consumption of sugar may also influence the cardiovascular system indirectly through obesity, metabolic abnormalities, triglycerides, etc.
The connection between sugar intake and dental health
There are many connections that are quite obvious when it comes to dental health and sugar consumption. The bacteria living in the mouth make use of sugar and convert it into acid, which in turn has the potential of causing damage to the tooth enamel. The more such acid attacks the tooth experiences, the more likely it is that there will be dental caries.
As a result of the review performed by WHO, it was established that there is a positive link between the consumption of free sugar and dental caries in children and adults. It was found that those people who consumed more free sugar also experienced more cases of tooth decay.Â
Effects on the Liver
In addition to being involved in detoxification, the liver metabolizes nutrients such as sugars as well. The over-consumption of sugary drinks, for example, is associated with fat accumulation in the liver. Numerous studies have revealed associations between high sugar intake and development of NAFLD; however, many other aspects, including overall calorie intake, body mass, activity levels, and diet, are also involved in increasing risks. That is why sugar intake cannot be evaluated independently of one’s lifestyle.
How Much Sugar Should Be Consumed?
Decrease in sugar consumption does not imply the elimination of all sources of carbohydrates or natural sweet foods, such as fruits. The emphasis should be placed on the reduction of free or added sugars, especially the ones contained in soft drinks and processed products.
According to the World Health Organization, the amount of free sugars should be lower than 10% of one’s daily energy intake, while more significant effects can be achieved with the decrease in their consumption to about 5%. Evidence-based recommendations from various review studies advocate for the same principle – to decrease the excessive consumption of free and added sugars. It may be done by consuming water instead of drinks, selecting unsweetened foods, looking at the nutrition facts on packaging, adding less sugar to the drink and preferring whole fruits instead of sweets.
Conclusion
High levels of sugar are not just an issue due to the sweetness they add to our diet. Eating too much sugar regularly – especially when they come from sugar-sweetened beverages and ultra-processed products – may cause obesity as well as a series of diseases such as type 2 diabetes, heart disease, tooth decay, and metabolic disorders. There are even studies that reveal the association between excess sugar intake and liver disorders among others.
One does not need to cut out sugar completely, but rather to eat it moderately and focus more on nutrient-dense foods. Even simple actions, such as drinking less sugar-laden beverages and avoiding ultra-processed products, can significantly improve one’s health status in the long run.
