Voedingsadvies El MondoResearch Question:
Epidemiological studies show an inconsistent relationship between eating cruciferous vegetables and the risk of getting colorectal cancer (colon cancer). It was therefore carried out this review article.
Eating cruciferous vegetables lowers the chances of getting colon cancer?
Study Design:
This overview article contained 24 case-control studies and 11 prospective cohort studies.
Results and conclusions:
The researchers found in a pooled analysis of 35 studies that eating cruciferous vegetables the chance of getting colon cancer significantly with 18% [RR = 0.82, 95% CI = 0.75-0.90] reduced. Significant is, there is a link at a 95% reliability.
In the subgroup analysis (to get additional information) the researchers found similar results for eating cabbage and broccoli.
In the subgroup analysis the researchers found also equivalent results for case-control studies, while the prospective cohort studies showed a borderline statistical significance.
The researchers concluded that eating cross-shaped vegetables, especially cabbage and broccoli the chance of getting colon cancer reduced.
Original title:
Cruciferous vegetables intake and the risk of colorectal cancer: a meta-analysis of observational studies by Wu QJ, Yang Y, [...], Xiang YB.
Link:
http://annonc.oxfordjournals.org/content/early/2012/12/03/annonc.mds601.short
Additional information about El Mondo:
An overview article (a collection of individual scientific studies in order to get a clear answer) of case-control studies or prospective cohort studies answers the following question:
Should I adjust my diet? "