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Onions and Garlic May Lower Cancer Risk

If you are a fan of onion and garlic, you may be protecting yourself from several cancers.  Recent research using data from large Italian and Swiss case-controlled studies indicates that people eating these fragrant foods have a lower risk of developing several types of cancer.

Researchers analyzed the relation between frequency of onion and garlic use and cancer at several sites.  The following table summarizes the study results.

Cancer Site

High Onion Intake

High Garlic Intake

Mouth and pharynx

84% lower risk

39% lower risk

Esophagus

88% lower risk

57% lower risk

Colorectal cancer

56% lower risk

26% lower risk

Larynx

83% lower risk

44% lower risk

Breast

25% lower risk

10% lower risk

Ovaries

73% lower risk

22% lower risk

Prostate

71% lower risk

19% lower risk

Kidneys

38% lower risk

31% lower risk

These results show that people eating the most onions and garlic had significantly less cancer. Additional studies conducted in France, China, and the United States have found these vegetables to be protective against cancer.  Although more research still needs to be done, the data so far is promising.  So eat up (and keep breath freshener nearby).

Source: Galeone, C., Pelucchi, C., Levi, F., Negri, E., Franceschi, S., Talamini, R., Giacosa, A. & La Vecchia, C. (2006). Onion and garlic use and human cancer. American Journal of Clinical Nutrition. 84:1027-32.