
While diet drinks are marketed as a healthier alternative to regular soft drinks, they are not without health risks. Diet drinks are free from sugar and calories, but they contain artificial sweeteners, which have been linked to an increased risk of health issues such as diabetes, dental erosion, heart issues, kidney disease, and weight gain. On the other hand, regular soft drinks contain large amounts of added sugar, which can also lead to adverse health effects such as weight gain and an increased risk of diabetes and heart disease. So, are diet drinks worse than regular soft drinks? The answer is not straightforward and depends on various factors, including taste preference, frequency of consumption, current body weight, and dietary habits.
Are diet drinks worse than regular?
| Characteristics | Values |
|---|---|
| Sugar content | Diet drinks contain sugar substitutes like aspartame, acesulfame potassium, sucralose, and stevia, while regular drinks contain sugar |
| Calories | Diet drinks are calorie-free, unlike regular drinks |
| Health risks | Both types of drinks have health risks. Regular drinks can increase the risk of adverse health effects due to their high sugar content. Diet drinks have been linked to an increased risk of diabetes, dental erosion, heart issues, kidney disease, weight gain, and neurological problems. |
| Taste | Some people find the taste of diet drinks less appealing than regular drinks due to the use of artificial sweeteners |
| Addictiveness | Both types of drinks can be addictive |
| Nutritional value | Diet drinks have no nutritional value, while regular drinks provide calories and sugar |
| Weight loss | Diet drinks may offer a short-term reduction in calories, but research suggests that artificial sweeteners can increase the desire for high-calorie foods, potentially leading to weight gain |
| Dental health | Diet drinks are acidic and can lead to dental erosion, similar to regular drinks |
| Gut health | Diet drinks may disturb the balance of bacteria in the gut microbiome, potentially affecting immune function |
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What You'll Learn

Diet drinks are linked to an increased risk of diabetes
While diet drinks are often seen as a healthier alternative to regular, sugary drinks, they have been linked to an increased risk of developing type 2 diabetes. This is despite the fact that they are usually sweetened with non-nutritive, non-calorific artificial sweeteners, such as aspartame, acesulfame potassium, sucralose, and stevia, which have a negligible effect on blood glucose levels.
Several studies have found a correlation between the consumption of diet drinks and the likelihood of developing type 2 diabetes. One study, conducted in 2009, showed that people who drank at least one diet fizzy drink a day were 36% more likely to develop a condition linked to type 2 diabetes, and 67% more likely to develop type 2 diabetes. Another study suggested that drinking more than two diet fizzy drinks a day could be linked to a form of diabetes called LADA (latent autoimmune diabetes in adults). The risk of type 2 diabetes rose in direct proportion to the number of diet sodas consumed.
It is important to note that these studies show a correlation, but not causation. One possible explanation for the link is that people who drink large quantities of diet drinks may have switched from sugary drinks because they were already at a higher risk of developing type 2 diabetes. Additionally, drinking large quantities of sweetened drinks could be a marker of an unhealthy lifestyle, including a high body weight and other unhealthy habits.
Another theory is that artificial sweeteners can alter the bacteria in the gut, leading to glucose intolerance, which is part of the chain in type 2 diabetes. Some research also suggests that the brain reacts to artificial sweeteners in a similar way to sugary sweets, increasing the desire for high-calorie foods and the risk of weight gain. Being overweight or obese is a known risk factor for developing type 2 diabetes.
While the evidence is not conclusive, and more research is needed, the potential health risks of diet drinks underscore the importance of limiting their consumption and opting for healthier alternatives, such as flavoured sparkling water.
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They may also increase the risk of dental erosion
While diet soda can help reduce added sugar and calorie intake, it may still come with health risks, some of which are similar to those posed by regular soda. One such risk is dental erosion. According to the American Dental Association, frequently drinking carbonated drinks like soda is one of the main risk factors for dental erosion. This is because soda is highly acidic, and consuming it regularly can lead to dental erosion over time. Studies show that people who drink diet soda tend to have higher rates of dental erosion than those who primarily drink water.
The high acidity of diet soda is due to the presence of artificial sweeteners and additives, which can also be harmful to your health in other ways. For example, these artificial sweeteners can trigger an inflammatory response in the body, potentially worsening joint pain. They have also been linked to an increased risk of neurological problems like strokes and dementia. Some studies suggest that artificial sweeteners may also disturb the balance of bacteria in the digestive tract, known as the gut microbiome, which can affect blood sugar control and inhibit the immune system's ability to respond to infections.
Furthermore, while diet soda may help reduce sugar intake, it can still increase the risk of diabetes. Research has shown a link between diet soda and an increased risk of metabolic syndrome, which includes symptoms such as high blood sugar and increased belly fat. Metabolic syndrome significantly increases the likelihood of developing type 2 diabetes. Additionally, the artificial sweeteners in diet soda can trigger similar responses in the brain as real sugar, potentially increasing your desire for high-calorie foods and putting you at greater risk of weight gain.
It is worth noting that the potential negative effects of diet soda depend on various factors, such as taste preference, frequency of consumption, current body weight, dietary habits, and intake of other sugary foods. While diet soda may offer a short-term reduction in calories, it is not a magic solution for weight loss or maintaining a healthy weight. Overall, while it may be a better alternative to regular soda in certain situations, it is important to remember that healthier options like water, flavoured sparkling water, or unsweetened tea and coffee are always preferable.
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Artificial sweeteners can cause headaches
While most health care providers do not recommend drinking diet sodas, they can be a better option than regular sodas for those who are unable to quit drinking soda altogether. Regular sodas contain 10 to 11 teaspoons of sugar per 12-ounce can, far exceeding the recommended daily sugar intake.
Artificial sweeteners, such as aspartame and sucralose, are common sugar substitutes used in diet sodas. These sweeteners are non-nutritive, providing little to no energy when consumed. However, they can trigger headaches in some individuals, especially those with a history of migraines. While the correlation is not fully understood, it is believed that aspartame affects serotonin and dopamine levels in the brain. Glutamate, a byproduct of aspartame, is also known to trigger severe headaches in certain people.
It is important to note that a large quantity of artificial sweeteners is typically required to trigger a headache, and the development of a headache may not be immediate. According to Dr. Vincent Martin, ingesting large quantities of aspartame, such as through the consumption of two to three liters of diet soda per day, may be necessary to induce a headache. Additionally, a 24- to 48-hour lag between exposure to the sweetener and the onset of a headache has been observed.
If you are experiencing headaches and suspect artificial sweeteners as a potential trigger, consulting a healthcare professional is advisable. They can help evaluate your symptoms and diet to determine if artificial sweeteners are contributing to your headaches. While artificial sweeteners may offer a way to reduce sugar intake, it is essential to be aware of their potential side effects and take a cautious approach to consumption.
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They can negatively impact bone density
While most health care providers do not recommend drinking diet sodas, some benefits come with replacing regular soda with diet soda. Regular soda contains 10 to 11 teaspoons of sugar per 12-ounce can, far exceeding the American Heart Association's recommended daily intake of added sugar for women and men.
However, diet sodas have been linked to negative impacts on bone density, especially in women. Colas, in particular, have been associated with low bone mineral density (BMD) in older women, according to studies like the Framingham Osteoporosis Study. This may be due to the caffeine and phosphoric acid (H3PO4) in colas, which can adversely affect bone health. The Tufts University study also found a link between soda intake and lower BMD in the hips of women, although the role of phosphorus specifically remains inconclusive.
Additionally, soft drinks may interfere with calcium absorption due to their phosphoric acid content. This interference can lead to low bone density and an increased risk of fractures, as evidenced by studies showing a correlation in adolescent girls. While carbonated beverages like sparkling water were not associated with lower BMD, the carbonation in soda may also play a role in its negative impact on bone health.
The consumption of soft drinks has also been linked to an increased risk of hip fractures in postmenopausal women. Osteoporosis, a condition characterized by weak and brittle bones, becomes more prevalent as Western populations age. Reduced bone mineral density increases the risk of fractures, and soda consumption may contribute to this risk by negatively impacting mineral homeostasis and calcium balance. While further research is needed to confirm these findings, the current evidence suggests that diet drinks can indeed negatively impact bone density.
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Diet drinks are linked to weight gain
While diet drinks are marketed as a healthier alternative to regular soft drinks, they have been linked to weight gain. This is because the artificial sweeteners in diet drinks trigger the same response in the brain as real sugar. Research suggests that ingesting these sweeteners frequently may increase your desire for high-calorie foods, putting you at greater risk of weight gain. One study found that people with obesity who switched to diet soda were likely to consume more calories in food than those who drank regular soda.
Additionally, the sweet-sensing reward centre of the brain can be altered by the consumption of diet drinks, which are often caffeinated and addictive. This can lead to a cycle of craving sugary foods and drinks, which, when consumed in excess, can contribute to weight gain.
The belief that diet drinks aid weight loss is also challenged by the fact that they offer little to no nutritional value. They are often referred to as "non-nutritive", meaning they provide little to no energy when consumed. This means that, despite reducing calorie intake, diet drinks do not provide the body with the nutrients it needs to function healthily.
Furthermore, some studies have found that drinking diet soda can cause the thyroid gland to work less efficiently, potentially leading to increased fat storage and weight gain.
It is important to note that the link between diet drinks and weight gain is complex and may be influenced by various factors, such as taste preference, frequency of consumption, current body weight, dietary habits, and intake of other sugar-containing foods. While the occasional diet drink may not be harmful, excessive consumption can lead to negative health outcomes, including weight gain.
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Frequently asked questions
Diet drinks are generally considered worse for you than regular soft drinks due to the health risks associated with consuming artificial sweeteners. These sweeteners have been linked to an increased risk of diabetes, dental erosion, heart issues, kidney disease, thyroid issues, joint pain, headaches, changes in bone density, stroke, dementia, and gut health issues. However, regular soft drinks that contain sugar are also bad for your health and can increase your risk of adverse health effects.
The health risks of consuming diet drinks include an increased risk of diabetes, dental erosion, heart issues, kidney disease, thyroid issues, joint pain, headaches, changes in bone density, stroke, dementia, and gut health issues.
Some alternatives to diet drinks include flavored sparkling water, kombucha, prebiotic soda, water, selzter, and unsweetened tea or coffee.
Diet drinks are often seen as a healthier alternative to regular soft drinks because they are typically free from sugar and calories. For people who are trying to manage their weight or blood sugar levels, diet drinks may be a better option than regular soft drinks.











































