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Int J Food Sci Nutr. 2009;60 Suppl 7:330-40. doi: 10.1080/09637480903150114. Epub 2009 Sep 9.

Milk consumption and circulating insulin-like growth factor-I level: a systematic literature review.

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  • 1Department of Nutrition and Food Hygiene, School of Radiation Medicine and Public Health, Medical College of Soochow University, Suzhou, China. qinliqiang@suda.edu.cn

Abstract

Studies suggest that the circulating insulin-like growth factor I (IGF-I) level is positively associated with the prostate cancer risk. The association of milk consumption and circulating IGF-I level has been examined in epidemiological studies with inconsistent results. We conducted a systematic literature review to summarize and quantify the current evidence for milk or dairy product consumption and the circulating IGF-I level. We searched relevant papers published in English up to March 2009 in various databases. Fifteen cross-sectional studies and eight randomized controlled trials were finally identified. Ten cross-sectional studies showed statistically positive correlation between milk consumption and the circulating IGF-I level. Randomized controlled trials indicated that the circulating IGF-I level was significantly higher in the milk intervention group. After meta-analysis, the weighted mean difference of the circulating IGF-I level was 13.8 ng/ml (95% confidence interval: 6.1-21.5 ng/ml) comparing the intervention group with the control group. The current evidence suggests that milk consumption may increase the circulating IGF-I level.

PMID:
19746296
[PubMed - indexed for MEDLINE]
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