Researchers at Harvard Medical School in the US analyzed the diet of 1,700 people over a 12-year period to come up with the answer.
“Eat a healthy and varied diet” is unanimous medical advice. But what do we eat to live longer? In an effort to contribute to the answer, researchers from Harvard Medical School, Boston, US, have discovered that apples should be a constant food on the longevity list.
According to them, the fruit can reduce by 20% the risk of people developing frailty syndrome. The condition mainly affects older adults, and is characterized by decreased muscle mass and strength, as well as decreased energy for daily activities.
Weakness syndrome patients become more susceptible to chronic diseases, infections, and acute stresses in the body. How does the apple protect them? Researchers believe that the flavanoids in the fruit are the explanation.
What are flavanoids?
Researchers analyzed the diets of 1,701 people over a 12-year period to investigate a possible link between consumption of flavonoid foods and frailty syndrome.
Flavonoids are chemical compounds found in fruits such as apples, grapes, pomegranates, strawberries, blueberries, raspberries, and citrus fruits, and in vegetables such as broccoli, spinach, kale, and onions. It is also found in grains and seeds, such as nuts, soybeans, and flaxseeds, for example.
Flavonoids have anti-inflammatory, antiviral, antibacterial, anti-allergic and vasodilating effect. In previous studies, it has indeed been associated with the prevention of chronic diseases, such as cardiovascular disease and cancer.
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What were the results?
In the 12-year period, 13.2% of the participants developed vulnerability syndrome. The researchers found that for every additional 10 mg of flavonoids included in the daily diet — which is equivalent to the amount found in apples, the risk of developing the condition decreased by 20 percent.
The group cited a flavanoid called quercetin as the most suitable for protecting health. It is found in higher concentrations in red fruits such as apples and spices such as onions, parsley and sage.
“The data suggest that there may be specific subclasses of flavonoids that have greater potential as a nutritional strategy for preventing frailty,” wrote researcher Shivani Sahni, co-author of the study. The work was published in May in the American Journal of Clinical Nutrition.
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Charlotte Whitmore is a contributor at Mediarunsearch.co.uk, covering a broad range of topics including news, politics, business, technology, sport, entertainment, and lifestyle. She focuses on delivering clear, balanced reporting and practical information that helps readers stay informed about current events and emerging developments. Her work highlights stories that matter to everyday audiences, with an emphasis on accuracy, relevance, and accessible journalism that keeps readers connected to the issues shaping the UK and beyond.