Heart disease remains the leading cause of death worldwide, taking nearly 18 million lives every year. It includes conditions such as heart attacks, heart failure, and stroke.
Many of these illnesses develop slowly over many years as blood vessels become damaged or blocked. Common risk factors include high blood pressure, high cholesterol, smoking, diabetes, obesity, unhealthy eating habits, lack of exercise, long-term stress, and family history.
While medicines and medical care are important, scientists continue to find that simple daily food choices can also have a powerful effect on heart health.
A new study from Edith Cowan University suggests that one easy change may help lower the risk of heart disease. The researchers found that eating about one cup of nitrate-rich vegetables every day can improve blood pressure and support healthier blood flow. These vegetables are inexpensive, widely available, and easy to include in everyday meals.
Nitrates are natural compounds found in certain vegetables. After eating them, the body changes nitrates into nitric oxide. Nitric oxide helps blood vessels relax and widen, allowing blood to flow more easily throughout the body.
Better blood flow means the heart does not have to work as hard to pump blood, which can help lower blood pressure and reduce stress on the heart and arteries.
Many common vegetables are naturally high in nitrates. Good choices include beetroot, spinach, kale, arugula, celery, radishes, and turnips. These foods also provide vitamins, minerals, fiber, and antioxidants, making them healthy for many reasons beyond their nitrate content.
To better understand how these vegetables affect health, the researchers studied more than 50,000 adults in Denmark. The participants were followed for more than 20 years as part of a long-term health study.
By comparing eating habits with health records, the researchers found that people who regularly ate nitrate-rich vegetables had a lower risk of developing several types of cardiovascular disease.
On average, people who ate these vegetables had a reduction of about 2.5 mmHg in systolic blood pressure, which is the top number in a blood pressure reading. Although this change may seem small, even modest reductions in blood pressure can lower the risk of heart disease across a large population.
The study also found that people who regularly ate nitrate-rich vegetables had a 12% to 26% lower risk of cardiovascular disease.
One of the strongest benefits was seen for peripheral artery disease, a condition in which narrowed blood vessels reduce blood flow to the legs. Participants had about a 26% lower risk of developing this condition. They also experienced fewer heart attacks, strokes, and cases of heart failure.
Interestingly, the researchers found that eating more than the recommended amount did not appear to provide extra protection. About one cup of raw vegetables or half a cup of cooked nitrate-rich vegetables each day seemed to provide the greatest benefit.
This means that eating a moderate amount consistently may be more important than eating very large servings occasionally.
Adding these vegetables to your diet can be simple. Fresh spinach can be blended into a smoothie with fruit. Beetroot can be roasted or added to salads. Arugula can be used in sandwiches or salads, while celery and radishes make easy snacks. Small daily habits like these may help improve heart health over time.
Dr. Catherine Bondonno, who led the research, said the findings show how powerful healthy foods can be in reducing the risk of heart disease.
While nitrate-rich vegetables are not a replacement for medicines or medical treatment, they can be an important part of an overall heart-healthy lifestyle alongside regular exercise, maintaining a healthy weight, avoiding smoking, limiting alcohol, and following medical advice.
The study was published in the European Journal of Epidemiology. Its findings add to growing evidence that simple, affordable dietary changes can make a meaningful difference to long-term health. For many people, eating just one cup of nitrate-rich vegetables each day may be one of the easiest steps they can take to help protect their heart for years to come.
If you care about heart health, please read studies about how eating eggs can help reduce heart disease risk, and Vitamin K2 could help reduce heart disease risk.
For more information about heart health, please see recent studies about how to remove plaques that cause heart attacks, and results showing a new way to prevent heart attacks, strokes.
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