A total of 33 studies –which included more than 50,000 cancer cases– were eligible for the analysis. When comparing the highest with the lowest category of nut intake, high consumption of nuts was significantly associated with decreased risk of overall cancer. The protective effect of nut consumption was especially apparent against cancers from the digestive system. Researchers also observed a linear dose-response relationship between nut consumption and cancer: Per 20 g/day increase in nut consumption was related to a 10% decrease in cancer risk.
Long, J., Ji, Z., Yuan, P., Long, T., Liu, K., Li, J., & Cheng, L. (2020). Nut Consumption and Risk of Cancer: A Meta-analysis of Prospective Studies. Cancer epidemiology, biomarkers & prevention: a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology, 10.1158/1055-9965.EPI-19-1167. Advance online publication. doi:10.1158/1055-9965.EPI-19-1167
Long, J., Ji, Z., Yuan, P., Long, T., Liu, K., Li, J., & Cheng, L. (2020). Nut Consumption and Risk of Cancer: A Meta-analysis of Prospective Studies. Cancer epidemiology, biomarkers & prevention: a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology, 10.1158/1055-9965.EPI-19-1167. Advance online publication. doi:10.1158/1055-9965.EPI-19-1167