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Research Question:
Eating fish reduces the chance of getting stomach cancer?

Study Design:
This overview article contained 27 cohort studies with 2325040 participants, of which 24115 people with stomach cancer. The average follow-up time was 13.6 years.

There was heterogeneity between the studies but no publication bias.

Results and conclusions:
The researchers found that regularly eating fish the chance of getting stomach cancer significantly with 7% [95% CI = 0.88-0.98] reduced.

The researchers found that eating little fish the chance of getting stomach cancer significantly with 6% [95% CI = 0.89-0.99] reduced.

The researchers found that eating a lot of fish the chance of getting stomach cancer significantly with 9% [95% CI = 0.84-0.97] reduced.

The researchers found that each 20 grams of fish per day, the chance of getting stomach cancer non-significantly with 2% [95% CI = 0.96-1.01] reduced.

The researchers found that eating fish the chance of getting colon cancer significantly with 7% [95% CI = 0.87-0.99, p 0.01] reduced.

The researchers found that eating fish the chance of getting esophageal cancer significantly with 9% [95% CI = 0.83-0.99, p 0.05] reduced.

The researchers found that eating fish the chance of getting hepatocellular carcinoma (a type of liver cancer) significantly with 29% [RR = 0.71, 95% CI = 0.48-0.95, p 0.01] reduced.

The researchers concluded that eating fish reduced the chance of getting stomach cancer.

Original title:
Fish consumption and risk of gastrointestinal cancers: A meta-analysis of cohort studies by Yu Dong XF, Would J and J.

Link:
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4223275/

Additional information about El Mondo:
Find here more studies on fish consumption.