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Here’s How Physical Activity Reduces Liver Cancer Risk

It is now known that physical activity, including walking and muscle-strengthening activities, are strongly associated with significantly reduced risk of cirrhosis-related death. New research presented at Digestive Disease Week (DDW) 2019,reveals that chronic liver disease is increasing, partly due to the obesity epidemic, and currently there are no guidelines for the optimal type of exercise for the prevention of cirrhosis-related mortality. Researchers hope these findings will help provide specific exercise recommendations for patients at risk for cirrhosis and its complications.

“The benefit of exercise is not a new concept, but the impact of exercise on mortality from cirrhosis and from liver cancer has not yet been explored on this scale,” said Dr Tracey Simon, lead researcher on the study and instructor of medicine at Harvard Medical School and Massachusetts General Hospital, Boston.

“Our findings show that both walking and strength training contribute to substantial reductions in risk of cirrhosis-related death, which is significant because we know very little about modifiable risk factors.”

Simon and her team prospectively followed 68,449 women from the Nurses’ Health Study and 48,748 men from the Health Professionals Follow-up Study, without known liver disease at baseline.

Participants provided highly accurate data on physical activity, including type and intensity, every two years from 1986 through 2012, which allowed researchers to prospectively examine the association between physical activity and cirrhosis-related death.

Previous research has been limited to studies that assessed physical activity at just one point in time, or studies with very short-term follow-up. This was the first prospective study in a large U.S. population to include detailed and updated measurements of physical activity over such a prolonged period, which allowed researchers to more precisely estimate the relationship between physical activity and liver-related outcomes.

“In the U.S., mortality due to cirrhosis is increasing dramatically, with rates expected to triple by the year 2030. In the face of this alarming trend, information on modifiable risk factors that might prevent liver disease is needed,” said Simon.

“Our findings support further research to define the optimal type and intensity of physical activity to prevent adverse outcomes in patients at risk for cirrhosis.”

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