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Can consumption of raw vegetables decrease the count of sister chromatid exchange? Results from a cross-sectional

Aleksander Galas1, Antonina Cebulska-Wasilewska

  • 1Department of Epidemiology, Chair of Epidemiology and Preventive Medicine, Jagiellonian University Medical College, 7 Kopernika St, Kraków, Poland, mygalas@cyf-kr.edu.pl.

European Journal of Nutrition
|April 18, 2014
PubMed
Abstract

Insights

Consuming raw vegetables significantly lowers sister chromatid exchange (SCE) frequency, a biomarker for genotoxic exposure. This suggests raw vegetables offer protection against DNA damage, unlike cooked vegetables or fruits.

Area of Science:

  • Cytogenetics
  • Environmental Health
  • Nutritional Science

Background:

  • Sister chromatid exchange (SCE) is a sensitive biomarker for genotoxic and carcinogenic agent exposure.
  • Lifestyle factors, including diet, can influence the biological effects of genotoxic exposures.
  • Previous research on vegetable and fruit consumption's effect on SCE is inconsistent.

Purpose of the Study:

  • To investigate the impact of raw and cooked vegetable and fruit consumption on SCE frequency.
  • To assess dietary influences on cytogenetic damage as a marker of genotoxicity.

Main Methods:

  • Study included 62 participants: colorectal cancer patients, hospital controls, and healthy lab workers.
  • SCE frequency was measured in blood lymphocytes.
  • Dietary intake of vegetables and fruits was assessed using a food frequency questionnaire.

Main Results:

  • SCE frequency varied significantly across groups: lowest in hospital controls (4.4 ± 1.1), similar in CRC patients (4.5 ± 1.0), and highest in lab workers (7.4 ± 1.2).
  • Multivariable regression revealed a significant inverse association between raw vegetable intake and SCE frequency (b = -0.20).
  • No significant association was found for cooked vegetable or fruit consumption with SCE frequency.

Conclusions:

  • Consumption of raw vegetables demonstrates a protective effect against DNA replication disruption, as indicated by reduced SCE frequency.
  • These findings suggest raw vegetables may mitigate risks associated with genotoxic agents.
  • Further research is needed to clarify the roles of cooked vegetables and fruits in relation to SCE.

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