Western diet, sedentary lifestyle likely factors in global rise in cancer for adults 50 and under:
Those born in 1960, for example, have a higher risk of developing cancer than those born in 1950."We found that this risk is increasing with each generation," Ogino said."We predict that this risk level will continue to climb in successive generations.”Certain cancer risk factors including"highly processed foods, sugary beverages, obesity, type 2 diabetes, sedentary lifestyle, and alcohol consumption" have all increased since the 1950s, the researchers said.
Researchers did not identify specific increases in risk in the various cancers. But, overall, more people globally are less healthy. Those unhealthy behaviors are likely increasing cancer rates at younger ages, they said. “Among the 14 cancer types on the rise that we studied, eight were related to the digestive system. The food we eat feeds the microorganisms in our gut,” said the study's lead author, Dr. Tomotaka Ugai, also in the hospital's pathology department, in the summary. “Eventually these changes can influence disease risk and outcomes.”
Researchers worldwide should collaborate to better monitor global trends and a potential global cancer epidemic, the researchers said. More in-depth lifelong studies including children can also help track possible impacts of environmental factors. And ongoing research should include specimens from cancers to determine possible differences between early onset cases and those found later in life.
"This is not only more cost-effective considering the many cancer types needed to be studied, but I believe it will yield us more accurate insights into cancer risk for generations to come," Ugai said.
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