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Walking More May Reduce the Risk of Death

Longevity By Nature
 
EuroMedica

The number of steps you should walk every day to start seeing benefits to your health is lower than Exercisepreviously thought, according to the largest analysis to investigate this.

The study, published in the European Journal of Preventive Cardiology, found that walking at least 3,967 steps a day started to reduce the risk of dying from any cause, and 2,337 steps a day reduced the risk of dying from diseases of the heart and blood vessels (cardiovascular disease).

However, the new analysis of 226,889 people from 17 different studies around the world has shown that the more you walk, the greater the health benefits. The risk of dying from any cause or from cardiovascular disease decreases significantly with every 500 to 1,000 extra steps you walk. An increase of 1,000 steps a day was associated with a 15 percent reduction in the risk of dying from any cause, and an increase of 500 steps a day was associated with a 7 percent reduction in dying from cardiovascular disease.

The researchers, led by Maciej Banach, Professor of Cardiology at the Medical University of Lodz, Poland, and Adjunct Professor at the Ciccarone Center for the Prevention of Cardiovascular Disease, Johns Hopkins University School of Medicine, found that even if people walked as many as 20,000 steps a day, the health benefits continued to increase. They have not found an upper limit yet.

“Our study confirms that the more you walk, the better,” said Banach. “We found that this applied to both men and women, irrespective of age, and irrespective of whether you live in a temperate, sub-tropical or sub-polar region of the world, or a region with a mixture of climates. In addition, our analysis indicates that as little as 4,000 steps a day are needed to significantly reduce deaths from any cause, and even fewer to reduce deaths from cardiovascular disease.”

There is strong evidence that a sedentary lifestyle may contribute to an increase in cardiovascular disease and a shorter life. Studies have shown that insufficient physical activity affects more than a quarter of the world’s population. More women than men (32 percent versus 23 percent), and people in higher income countries compared to low-income countries (37 percent versus 16 percent) do not undertake a sufficient amount of physical activity. According to World Health Organization data, insufficient physical activity is the fourth most frequent cause of death in the world, with 3.2 million deaths a year related to physical inactivity. The COVID-19 pandemic also resulted in a reduction in physical activity, and activity levels have not recovered two years on from it.

“Until now, it’s not been clear what is the optimal number of steps, both in terms of the cut-off points over which we can start to see health benefits, and the upper limit, if any, and the role this plays in people’s health,” said Dr. Ibadete Bytyçi from the University Clinical Centre of Kosovo (Pristina, Kosovo), senior author of the paper. “However, I should emphasize that there were limited data available on step counts up to 20,000 a day, and so these results need to be confirmed in larger groups of people.”

This meta-analysis is the first not only to assess the effect of walking up to 20,000 steps a day, but also to look at whether there are any differences depending on age, sex or where in the world people live.

The studies analyzed by the researchers followed up participants for a median (average) of seven years. The mean (average) age was 64, and 49 percent of participants were female.

In people aged 60 years or older, the size of the reduction in risk of death was smaller than that seen in people aged younger than 60 years. In the older adults, there was a 42 percent reduction in risk seen in those who walked between 6,000 and 10,000 steps a day, while there was a 49 percent reduction in risk in younger adults who walked between 7,000 and 13,000 steps a day.

“In a world where we have more and more advanced drugs to target specific conditions such as cardiovascular disease, I believe we should always emphasize that lifestyle changes, including diet and exercise, which was a main hero of our analysis, might be at least as, or even more effective in reducing cardiovascular risk and prolonging lives,” said Banach. “We still need good studies to investigate whether these benefits may exist for intensive types of exertion, such as marathon running and iron man challenges, and in different populations of different ages, and with different associated health problems. However, it seems that, as with pharmacological treatments, we should always think about personalizing lifestyle changes.”

For more information, visit www.escardio.org.