The Heart Health Ingredient Many People Overlook: Why Added Sugar May Be a Bigger Risk Than You Think
Cardiologists Warn About the Hidden Impact of Added Sugar on Heart Health
For years, saturated fat has been one of the first things people blame when discussing heart disease. While dietary fat can play a role in overall health, many cardiologists are now highlighting another common ingredient that deserves closer attention: added sugar.
Dr Dmitry Yaranov, a cardiologist known for sharing heart health information with hundreds of thousands of followers online, has described added sugar as one of the biggest dietary concerns affecting cardiovascular health. According to his advice, the problem is not the natural sugars found in whole fruits or vegetables, but the large amounts of added sugar hidden in everyday foods and drinks.
From fizzy drinks and sweetened coffee beverages to sauces, cereals, desserts, and processed snacks, added sugar has become a regular part of many modern diets. Research suggests that consuming too much added sugar may increase the risk of conditions linked to heart disease, including obesity, high blood pressure, type 2 diabetes, and unhealthy cholesterol levels.
How Added Sugar Can Affect the Heart
The body needs glucose for energy, but excessive intake of added sugar can create problems over time. When people regularly consume large amounts of sugar, especially through sugary drinks and highly processed foods, it can contribute to metabolic changes that place stress on the cardiovascular system.
A diet high in added sugar may contribute to:
- Increased inflammation in the body
- Higher blood pressure
- Greater risk of insulin resistance
- Increased levels of harmful blood fats
- Weight gain and obesity
- Higher chances of developing type 2 diabetes
These factors are closely connected with cardiovascular disease, one of the leading causes of death worldwide.
Unlike naturally occurring sugar in foods such as apples, berries, and milk, added sugar often provides calories without important nutrients such as fibre, vitamins, and minerals. This is why health experts often describe sugary foods and drinks as sources of "empty calories."
Sugary Drinks and Heart Disease Risk
One of the biggest sources of added sugar is sugar-sweetened beverages. Soft drinks, energy drinks, sweetened teas, and many packaged juices can contain large amounts of sugar in a single serving.
A study from researchers at the Harvard T.H. Chan School of Public Health examined the relationship between sugary drinks, physical activity, and cardiovascular disease risk. The research suggested that drinking sugar-sweetened beverages regularly was associated with a higher risk of heart disease, even among people who exercised regularly.
The findings highlight an important message: exercise is extremely beneficial for heart health, but it may not completely cancel out the negative effects of a diet consistently high in added sugar.
The Link Between Added Sugar and Heart Disease Death Risk
Research published in JAMA Internal Medicine in 2014 examined the relationship between added sugar intake and cardiovascular deaths. The study followed thousands of adults over many years and found that people who consumed a higher percentage of their daily calories from added sugar had a significantly increased risk of dying from heart disease.
The researchers observed that the risk increased as added sugar consumption increased. The association remained even after considering factors such as physical activity, body weight, and other lifestyle factors.
This does not mean that eating a small amount of sugar will immediately damage the heart. Instead, it shows that consistently consuming excessive amounts over many years may increase cardiovascular risk.
Where Is Added Sugar Hiding?
Many people consume more added sugar than they realise because it appears in foods that may not seem like desserts.
Common sources include:
Soft Drinks
Fizzy drinks are among the largest contributors of added sugar in many diets. A single can can contain several teaspoons of sugar, quickly pushing daily intake above recommended levels.
Cakes, Biscuits, and Pastries
Sweet baked foods often contain a combination of sugar, refined carbohydrates, and fats. Eating these foods frequently can contribute to excessive calorie intake.
Breakfast Cereals
Some breakfast cereals marketed as healthy options can contain significant amounts of added sugar. Checking nutrition labels can help identify lower-sugar alternatives.
Sauces and Condiments
Ketchup, barbecue sauce, sweet chilli sauce, and salad dressings can contain surprising amounts of added sugar.
Flavoured Yoghurts
Although yoghurt can be a nutritious food, some flavoured varieties contain high levels of added sugar. Plain yoghurt with fresh fruit is often a lower-sugar choice.
How Much Sugar Should You Eat?
Health guidelines recommend limiting free sugars, which include added sugars and sugars naturally released from fruit juices.
According to NHS guidance, adults should consume no more than 30 grams of free sugars per day, which is around seven teaspoons.
Children have lower recommended limits depending on their age:
- Children aged 7 to 10: no more than 24 grams daily
- Children aged 4 to 6: no more than 19 grams daily
- Children aged 2 to 3: no more than 14 grams daily
Reducing added sugar does not mean eliminating all sweet foods forever. Small changes can make a meaningful difference.
Simple Ways to Reduce Added Sugar Intake
Making healthier choices does not require a complete diet overhaul. Some practical steps include:
- Replace sugary drinks with water, sparkling water, or unsweetened drinks
- Choose whole fruit instead of fruit juice
- Read food labels and compare sugar content
- Select plain yoghurt instead of flavoured versions
- Reduce sugar added to tea and coffee gradually
- Cook more meals at home where possible
- Choose snacks with protein and fibre to stay fuller for longer
The Bigger Picture: Protecting Your Heart
Heart health depends on many factors, including genetics, physical activity, sleep, stress levels, smoking habits, and overall diet quality. No single ingredient alone determines whether someone develops heart disease.
However, evidence continues to show that reducing excessive added sugar intake can be an important part of a heart-friendly lifestyle.
A balanced diet rich in vegetables, fruits, whole grains, lean proteins, and healthy fats, combined with regular movement and medical check-ups, remains one of the strongest approaches to protecting cardiovascular health.
The key message from cardiologists is not that sugar must disappear completely, but that hidden added sugar deserves more attention. By understanding where it appears and making small changes, people can take practical steps toward supporting long-term heart health.
Sources
- Harvard T.H. Chan School of Public Health research on sugar-sweetened beverages and cardiovascular disease risk.
- JAMA Internal Medicine (2014), "Added Sugar Intake and Cardiovascular Diseases Mortality Among US Adults."
- British Heart Foundation guidance on free sugars and heart health.
- NHS guidance on daily recommended limits for free sugars.
- Nature Medicine research on global health impacts associated with sugar-sweetened beverages.
Disclaimer
This article is for informational purposes only and does not replace professional medical advice. Dietary needs vary between individuals. If you have concerns about heart health, diabetes risk, or changes to your diet, consult a qualified healthcare professional.