We're always touting the nutritional benefits of fruit, and encouraging you to add them to your diet. If you need added incentive to grab an apple rather than a bag of chips, then check this out. People who eat fresh fruit on most days are at lower risk of having a heart attack or stroke than people who rarely eat fresh fruit at all, according to a new study.
The findings, published this week in the New England Journal of Medicine, come from a seven-year study of half a million adults in China, where fresh fruit consumption is much lower than in countries like the United Kingdom or the United States.
Researchers from the University of Oxford and Chinese Academy of Medical Sciences conducted a nationwide study of 500,000 adults from 10 urban and rural localities across China, tracking health for seven years through death records and electronic hospital records of illness. The present study was among people who did not have a history of cardiovascular diseases or anti-hypertensive treatments when first joined the study.
Fruit is a rich source of potassium, dietary fiber, antioxidants and various other potentially active compounds, and contains little sodium or fat and relatively few calories. The study found that fruit consumption — which was mainly apples or oranges — was strongly associated with many other factors, such as education, lower blood pressure, lower blood glucose and not smoking.
But, after allowing for what was known of these and other factors, a 100g portion of fruit per day was associated with about one-third less cardiovascular mortality and the association was similar across different study areas and in both men and women.
"The association between fruit consumption and cardiovascular risk seems to be stronger in China, where many still eat little fruit, than in high-income countries where daily consumption of fruit is more common," said study author Dr. Huaidong Du, University of Oxford, U.K. "Fruit in China is almost exclusively consumed raw, whereas much of the fruit in high-income countries is processed, and many previous studies combined fresh and processed fruit."
According to co-author Professor Liming Li, Chinese Academy of Medical Sciences, a recent Global Burden of Disease report put low fruit consumption as one of the leading causes of premature death in China. However, this was based on little evidence from China itself.
It's difficult to know whether the lower risk in people who eat more fresh fruit is because of a real protective effect. "If it is," adds senior author Professor Zhengming Chen, University of Oxford, U.K., "then widespread consumption of fresh fruit in China could prevent about half a million cardiovascular deaths a year, including 200,000 before age 70, and even larger numbers of non-fatal strokes and heart attacks."