New research shows sugary drinks like soda may increase heart disease risk — even in active people. Learn why and how to choose healthier alternatives.

A long-term observational study of more than 100,000 adults found that higher intake of sugar-sweetened drinks was associated with greater cardiovascular disease risk, even among people who met physical activity recommendations. Exercise still protects heart health, but it does not fully offset regular sugary-drink consumption. Water, unsweetened tea and unsweetened coffee are healthier everyday choices.  

New research shows sugary drinks like soda may increase heart disease risk — even in active people. Learn why and how to choose healthier alternatives.
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Dr. Chrysoula I. Liakou MD, PhD Google Scholar LinkedIn

Internal Medicine Specialist
Cancer Immunology Researcher

Even Two Sugary Drinks a Week May Harm Heart Health, Study Finds

A recent study suggests that even consuming as little as two servings per week of sugary drinks such as soda can negate the positive effects of physical activity on heart health.

Excessive sugar intake has been linked to chronic inflammation and obesity, both of which are known risk factors for cardiovascular disease.

To mitigate these risks, experts advise eliminating soda and opting for healthier alternatives, such as water, unsweetened coffee, or tea.


Eating too much added sugar is bad for your health, and now, research says that working out might not fix the damage done by sugary drinks when it comes to heart health.


A study published in
The American Journal of Clinical Nutrition examined the health of 100,000 adults aged 30 and older.


They discovered that people who had drinks like soda more than twice a week were more likely to have heart problems, no matter how much they exercised. For those who consumed these drinks daily, the risk was even more significant.


Even 150 minutes of exercise a week, which is typically recommended, could have mitigated the harmful effects of sugary beverages.



Sugar-Sweetened Beverages Affect Heart Health And Workouts.


Sugary drinks counteract the benefits of exercise for your body. Experts say that these super-sweet drinks alter the good bacteria in your stomach, which can lead to more plaque building up in your major arteries, such as those supplying your heart and brain.


The bacteria in our stomachs are essential because they can help prevent us from developing major health problems, such as diabetes, heart disease, and cancer.


Working out usually helps lower inflammation in the body, but consuming sugary drinks can exacerbate it. It's like exercise tries to turn down the bad stuff in our bodies, but sugary beverages turn it right back up, making it easier for harmful plaque to build up in our arteries and upping the risk of cancer.


Although working out is beneficial for your heart, it cannot reverse the damage caused by a high-sugar diet. Drinking lots of sugary drinks might even make you feel too tired to exercise as much as you should, although the research had other focuses.



The Adverse Health Effects Of Soda


Drinking soda isn't great for your health because it contains excessive sugar. This can lead to gaining weight from too many calories, tooth decay from all the sugar helping bacteria grow, as well as serious stuff like type 2 diabetes and heart problems.


Too much sugar can stiffen your arteries, which isn't good for your heart. It can also mess with your blood fats, called triglycerides, making heart disease more likely over time. If your liver gets overloaded with sugar, it can mess up your metabolism, too.


Having too much sugar can also cause long-term inflammation, putting a lot of stress on your heart and blood vessels, leading to heart disease. Additionally, foods and drinks high in added sugar don't provide your body with essential nutrients, and they can contribute to weight gain, which in turn poses health risks.


Even the "diet" kind isn't a free pass when it comes to soda. Diet sodas might be similar to regular ones and should also be limited. They might have less sugar, but are not free from health risks. Some studies show that even diet sodas could be linked to obesity, type 2 diabetes, and high blood pressure, but the connection isn't as strong as it is with regular soda.


There's also a chance that some people switch to diet soda after already experiencing weight gain or other health issues, which makes it tricky to know if diet soda is the cause of these problems.

 

Risk

How It Happens

Weight Gain

Extra calories with no nutrients

Type 2 Diabetes

Increases insulin resistance

Heart Disease

Raises triglycerides, stiffens arteries

Tooth Decay

Sugar feeds cavity-causing bacteria

Fatty Liver Disease

Excess sugar burdens liver metabolism

Chronic Inflammation

Fuels long-term organ and artery damage

 


Can Soda Be Consumed In Moderation?


Health experts recommend avoiding soda, whether it is consumed regularly or as part of a diet. Instead, drink water or natural fruit juices. It's also wise to monitor the amount of added sugar you consume each day.


For example, guidelines suggest that women should limit their intake of added sugar to no more than 6 teaspoons daily, and men should limit theirs to no more than 9 teaspoons. To put that in perspective, one can of soda can have around 10 teaspoons of added sugar. So, the advice is to limit yourself to no more than one can of soda a week to stay on the healthier side.



Healthier Drink Ideas


Overeating sugar can cause long-term swelling in your body and make you gain weight, which isn't good for your heart.


Health experts recommend skipping soda altogether and sticking to water, and if you prefer, coffee or tea without added sugar.


There are plenty of good drinks out there. The top pick is always water, whether it's still or fizzy. You can make it tastier by adding slices of fruit, such as lemon or cucumber. If you're a fan of coffee or tea, those are also good choices; just keep them sugar-free. Natural fruit smoothies mixed with milk can also be delicious and healthy.


Other great choices include water with natural flavours, like adding a bit of cucumber or lemon to give it a fresh taste, herbal teas, or even flavoured sparkling waters if you want something different.


Suppose you're looking to improve your diet and reduce sugar intake.

 

FAQ  Sugary Drinks & Heart Health

 

Can I drink soda if I exercise regularly?

Even with exercise, sugary drinks may still raise your heart disease risk.

 

Are diet sodas healthier than regular soda?

Not necessarily. Some studies link diet soda to diabetes and high blood pressure.

 

What are better alternatives to soda?

Water (still or sparkling), unsweetened tea, and fruit-infused water are best.

 

How much added sugar is too much?

Women: 6 teaspoons daily. Men: 9 teaspoons. One soda = 10 teaspoons.


In that case, 
Mobi Doctor can provide personalised advice and support to help you make healthier beverage choices and manage your overall health.



Sugary Drinks, Exercise and Heart Disease Risk FAQs

The study found that greater sugar-sweetened beverage intake was associated with higher cardiovascular disease risk. It followed 105,148 US adults across two cohorts for up to about 30 years. Compared with people who rarely or never drank them, those consuming at least two servings daily had a 21% higher relative risk after adjustment.

No, regular exercise does not fully cancel out the cardiovascular risk associated with sugary drinks. Among participants meeting physical activity guidelines, consuming at least two servings daily was associated with a 15% higher risk than meeting the guidelines while rarely drinking them. Reducing sugary drinks and remaining active are complementary, not interchangeable, heart-health habits.

No, the research does not prove that two sugary drinks per week directly cause heart disease or establish a precise danger threshold. It was an observational study that found risk increased as long-term intake rose. Cardiovascular risk also reflects the wider pattern, including diet, smoking, weight, blood pressure, cholesterol and physical activity.

Sugar-sweetened drinks include regular soda, sweetened lemonade, fruit drinks or cocktails, sweetened iced tea or coffee, and many sports and energy drinks. Check the label because serving sizes differ and sugar may appear as sucrose, glucose-fructose syrup, corn syrup, honey or fruit-juice concentrate. Unsweetened drinks and whole fruit are different categories.

Regular sugary drinks deliver rapidly absorbed free sugar and calories while providing little fullness. Frequent intake can contribute to weight gain, insulin resistance, higher triglycerides, fatty liver and inflammation, all of which can worsen cardiometabolic risk. These mechanisms support the observed association, although they do not mean that one sugary drink directly causes a cardiovascular event.

WHO recommends keeping free sugars below 10% of daily energy intake and suggests aiming below 5% for additional health benefits. For a 2,000-calorie diet, these levels equal approximately 50 g and 25 g respectively. Free sugars include those added to drinks and those naturally present in honey, syrups, fruit juice and fruit-juice concentrates.

Replacing regular soda with a diet version reduces sugar and usually calories, so it can be a transitional swap for someone who frequently drinks sugary soda. However, the study did not establish diet drinks as protective, and WHO does not recommend non-sugar sweeteners for long-term weight control. Water and other unsweetened drinks remain preferable everyday options.

Not necessarily. Unsweetened fruit juice and smoothies contain vitamins, but their sugars count as free sugars once fruit is juiced or blended, and they are easy to consume quickly. Whole fruit provides more intact fibre and greater fullness. NHS guidance limits fruit juice and smoothies combined to 150 ml daily, preferably consumed with a meal.

Water is the best routine replacement, including sparkling water flavoured with lemon, lime, cucumber or mint. Unsweetened tea, coffee and milk can also be suitable depending on individual needs. Reduce sugary drinks gradually by replacing one serving at a time, choosing smaller portions, avoiding multipacks and checking the sugar content per serving on nutrition labels.


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