Jeffrey Salazar
Sugar is one of the main causes of tooth decay and consuming too much of it can lead to various health problems. The average American consumes about 17 teaspoons of added sugar every day, which is more than the recommended limit of 12 teaspoons. Excess sugar can lead to weight gain, obesity, type 2 diabetes, and heart disease. It can also cause liver damage and increase the risk of cardiovascular disease. Added sugars provide no nutritional benefit and can be found in many unexpected foods, making it easy to exceed the recommended limit.
| Characteristics | Values |
|---|---|
| Average daily intake of added sugars for children and young adults (2-19 years) | 17 teaspoons |
| Average daily intake of added sugars for adults (20 or older) | 17 teaspoons for women, 19 teaspoons for men |
| Recommended limit of added sugars for a 2,000-calorie diet | 200 calories or 12 teaspoons |
| Recommended limit of added sugars for women | 100 calories or 6 teaspoons |
| Recommended limit of added sugars for men | 150 calories or 9 teaspoons |
| Recommended limit of added sugars by the American Heart Association | 25 grams or 6 teaspoons for women, 36 grams or 9 teaspoons for men |
| Recommended limit of added sugars by the Dietary Guidelines for Americans 2020–2025 | Less than 10% of total daily calories |
| Recommended limit of added sugars by the NHS | 90g a day, including 30g of "free sugars" |
| Health risks of consuming too much sugar | Weight gain, obesity, type 2 diabetes, heart disease, tooth decay, liver damage, kidney damage |
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Weight gain and obesity
The average American consumes about 270 calories of added sugars each day, which is approximately 17 teaspoons. This exceeds the recommended limit of 12 teaspoons or 200 calories per day. Sugar-sweetened beverages, desserts, and sweet snacks are the primary sources of added sugars in the American diet. These added sugars contribute to weight gain by providing empty calories that do not provide any essential nutrients.
Research has shown that people who consume sugar-sweetened beverages tend to have a higher body weight and an increased risk of type 2 diabetes compared to those who do not. In one study, individuals who added more sugar to their diet gained about 1.7 pounds in less than two months. Excess sugar can also cause inflammation in fat cells, leading to the release of chemicals that further contribute to weight gain.
The American Heart Association recommends limiting added sugar intake to no more than 6% of daily calories. For women, this translates to no more than 100 calories or about 6 teaspoons of sugar per day, while men should aim for no more than 150 calories or about 9 teaspoons. These guidelines focus on all added sugars, including high-fructose corn syrup.
It is important to read nutrition labels and be mindful of hidden sugars in processed foods. Added sugars can be listed under various names, such as corn syrup, agave nectar, palm sugar, cane juice, or sucrose. By reducing added sugar intake and choosing healthier alternatives, individuals can help control their weight and improve their overall health.
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Heart disease
The human body does not require sugar to function properly. However, an abundance of sugar in one's diet is usually in the form of added sugars, which provide empty calories and can promote weight gain. Excess sugar consumption can also lead to serious heart health issues.
Weight Gain
Consuming too much sugar can cause weight gain. Sugar-sweetened beverages, for instance, can trick the body's appetite-control system, making it easier to add more calories to one's diet. This can lead to obesity, which increases the risk of diabetes, high blood pressure, and high cholesterol—all of which are risk factors for heart disease.
Diabetes
Excessive sugar intake can also lead to diabetes, which is a risk factor for heart disease. When one consumes too much sugar, the body may stop responding properly to insulin, causing the pancreas to produce even more insulin. Eventually, the pancreas can break down, leading to type 2 diabetes.
High Blood Pressure
Research suggests that a diet high in sugar is linked to high blood pressure, a major risk factor for heart disease. A high-sugar diet can also stimulate the liver to release harmful fats into the bloodstream, which further increases the risk of heart disease.
Cholesterol
Sugar can heighten "bad" LDL cholesterol levels while lowering "good" HDL cholesterol levels. High LDL cholesterol causes artery-clogging plaque, damaging blood vessels and the heart.
Inflammation
A sugar-rich diet can lead to chronic inflammation, which stresses the heart and blood vessels, increasing the risk of heart disease.
Fatty Liver Disease
High amounts of sugar overload the liver, which metabolizes sugar and converts dietary carbohydrates to fat. Over time, this can lead to a greater accumulation of fat, which may turn into fatty liver disease, a contributor to diabetes and, consequently, heart disease.
Heart Failure, Heart Attacks, and Strokes
The extra insulin in the bloodstream from excessive sugar consumption can cause the walls of arteries to become inflamed, thicker than normal, and more stiff. This stresses the heart and damages it over time, leading to heart failure, heart attacks, and strokes.
To maintain heart health, it is crucial to limit the consumption of foods with high amounts of added sugars, including sugary beverages, and opt for heart-healthy foods such as fruits, vegetables, and whole grains.
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Type 2 diabetes
There is no evidence that a diet high in sugar directly causes type 2 diabetes. However, there is a strong association between high sugar intake and diabetes risk. Research suggests that sugar may increase diabetes risk both directly and indirectly. While sugar alone may not lead to type 2 diabetes, it can worsen the condition for those who already have it.
The current recommendation for sugar intake is that it does not exceed 10% of daily energy intake, which is around 30g or seven teaspoons for adults. However, this percentage is ideally reduced to 5% or 25g, which is about six teaspoons per day. For children, the recommended intake is 24g per day for 5-11-year-olds and 19g per day for 4-6-year-olds.
To reduce the risk of developing type 2 diabetes, it is important to limit the intake of added sugars and follow a balanced diet that is high in fibre, protein, and healthy fats. Regular exercise is also crucial, with just 150 minutes of moderate activity per week potentially reducing the risk. Additionally, maintaining a healthy weight and a healthy waist-to-hip ratio can help manage diabetes and prevent prediabetes from progressing to diabetes.
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Tooth decay
The body does not require added sugars to function, and they contribute additional calories and zero nutrients to food. Sugar is one of the main causes of tooth decay. When sugar is consumed, it interacts with the bacteria within the plaque to produce acid. This acid is responsible for tooth decay as it slowly dissolves the enamel, creating holes or cavities in the teeth. The sugars found naturally in fruit and vegetables are less likely to cause tooth decay as they are contained within the structure. However, when fruit and vegetables are juiced or blended into a smoothie, the sugars are released, and these sugars can damage teeth.
Plaque begins to build up on teeth within 20 minutes of eating, and if it is not removed effectively, tooth decay starts. People who regularly consume sugar are at a higher risk of developing dental caries, especially if the food they eat is sticky or consumed between meals. Sugary snacks and sugar-sweetened beverages have particularly detrimental effects on teeth. Frequent snacking on foods high in sugar increases the amount of time teeth are exposed to the dissolving effects of various acids, causing tooth decay. One study found that reducing sugar intake to less than 10% of daily calories decreases the risk of tooth decay.
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Liver damage
Consuming an abundance of sugars can lead to liver damage, as the liver is the body's primary processing plant for all nutrients absorbed into the intestines. When we consume sugar, our bodies break it down into glucose. Our body uses some of the glucose immediately for energy, and saves some for later. However, any excess glucose in the blood is turned into fat cells.
The liver can store energy as glycogen, a type of fat. If you consume large amounts of fructose, your liver begins to store a lot of this sugar as glycogen, leading to a condition called fatty liver disease. Fatty liver disease can cause inflammation, which is a root cause of many cancers. Fructose consumption can also lead to a buildup of fat in the liver, as well as an increase in bad cholesterol, blood pressure, and other factors that are detrimental to the heart.
Non-alcoholic fatty liver disease (NAFLD) is a condition that occurs when too much fat builds up in the liver. While it is normal for the liver to store some fat, if more than 5% of the liver's weight comes from fat, it can cause problems. NAFLD can lead to more serious complications like cirrhosis, which is scarring and permanent damage to the liver that could eventually lead to liver failure and the need for a liver transplant.
Excessive sugar consumption can also cause cellular damage in the liver, which can lead to liver cancer. Recent studies have associated this trend with weight gain, obesity, insulin resistance, type 2 diabetes, and non-alcoholic fatty liver – metabolic anomalies related to the development of hepatocellular carcinoma (HCC), which represents about 90% of primary liver cancers.
To reduce the risk of liver damage and other health issues, it is important to limit the amount of added sugars in one's diet. The World Health Organization (WHO) advises that people consume no more than 5% of their daily calories from added sugar. This amounts to about 25 grams of added sugar for a 2,000-calorie diet. Additionally, increasing physical activity can help improve the body's use of blood sugar and reduce the amount of fat stored in the liver.
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Frequently asked questions
An abundance of sugars in your diet can lead to weight gain and obesity, type 2 diabetes, and heart disease. Excess sugar can also cause tooth decay and negatively impact your skin's firmness and youthfulness.
The recommended daily limit of added sugars is less than 10% of total daily calories, which is about 12 teaspoons or 200 calories for a 2,000 calorie diet. The American Heart Association recommends a more conservative limit of no more than 6% of calories each day, which is about 6 teaspoons for women and 9 teaspoons for men.
Added sugars are found in sugar-sweetened beverages, desserts, sweet snacks, baked goods, sweetened dairy, and even some savory foods like breads and sauces. They go by various names on ingredient lists, including corn syrup, agave nectar, palm sugar, cane juice, sucrose, and high-fructose corn syrup.
To reduce added sugar intake, it's important to read nutrition labels and ingredients lists carefully. Look for the “Total Sugars” and “Added Sugars” sections on the nutrition facts panel. Choose foods with lower sugar content and limit the consumption of sugary drinks and snacks. Gradually reduce the amount of sugar you add to drinks and cereals until you can cut it out altogether, or switch to a sweetener.
