Green tea reduces stomach cancer

Afbeelding

Objectives:
Which factors are associated with the risk of stomach cancer?

Study design:
This review article included 232 observational studies involving 33,831,063 participants.

Results and conclusions:
The investigators found H. pylori infection significantly increased risk of stomach cancer with 156% [OR = 2.56, 95% CI = 2.18 to 3.00].

The investigators found formerly smoked significantly increased risk of stomach cancer with 43% [OR = 1.43, 95% CI = 1.29 to 1.59].

The investigators found currently smoking significantly increased risk of stomach cancer with 61% [OR = 1.61, 95% CI = 1.49 to 1.75].

The investigators found currently drinking significantly increased risk of stomach cancer with 19% [OR = 1.19, 95% CI = 1.10 to 1.29].

The investigators found formerly drank significantly increased risk of stomach cancer with 73% [OR = 1.73, 95% CI = 1.17 to 2.56].

The investigators found intake of fruits ≥3 times/week significantly decreased risk of stomach cancer with 52% [OR = 0.48, 95% CI = 0.37 to 0.63].

The investigators found intake of vegetables ≥3 times/week significantly decreased risk of stomach cancer with 38% [OR = 0.62, 95% CI = 0.49 to 0.79].

The investigators found using pickled vegetables significantly increased risk of stomach cancer with 28% [OR = 1.28, 95% CI = 1.09 to 1.51].

The investigators found green tea significantly decreased risk of stomach cancer with 12% [OR = 0.88, 95% CI = 0.80 to 0.97].

The investigators concluded that both smoking, drinking and H. pylori infection increase the risk of stomach cancer, while both ≥3 times/week fruit and vegetables and green tea reduce the risk of developing stomach cancer.

Original title:
Risk factors for stomach cancer: a systematic review and meta-analysis by Poorolajal J, Moradi L, [...], Gohari-Ensaf F.

Link:
https://www.ncbi.nlm.nih.gov/pubmed/32023777

Additional information of El Mondo:
Find more information/studies on alcohol, tea, vegetable and fruit and cancer right here.