Citrus consumption and risk of basal cell carcinoma and squamous cell carcinoma of the skin

Shaowei Wu, Eunyoung Cho, Diane Feskanich, Wen Qing Li, Qi Sun, Jiali Han, Abrar A. Qureshi

Research output: Contribution to journalArticle

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Abstract

Animal experiments have demonstrated the photocarcinogenic properties of furocoumarins, a group of naturally occurring chemicals that are rich in citrus products. We conducted a prospective study for citrus consumption and risk of basal cell carcinoma (BCC) and squamous cell carcinoma (SCC) of the skin based on data from 41 530 men in the Health Professionals Follow-up Study (1986-2010) and 63 759 women in the Nurses' Health Study (1984-2010) who were free of cancers at baseline. Over 24-26 years of follow-up, we documented 20 840 incident BCCs and 3544 incident SCCs. Compared to those who consumed citrus products less than twice per week, the pooled multivariable-adjusted hazard ratios were 1.03 [95% confidence interval (95% CI): 0.99-1.08] for BCC and 1.14 (95% CI: 1.00-1.30) for SCC for those who consumed two to four times per week, 1.06 (95% CI: 1.01-1.11) for BCC and 1.15 (95% CI: 1.02-1.28) for SCC for five to six times per week, 1.11 (95% CI: 1.06-1.16) for BCC and 1.22 (95% CI: 1.08-1.37) for SCC for once to 1.4 times per day and 1.16 (95% CI: 1.09-1.23) for BCC and 1.21 (95% Cl: 1.06-1.38) for SCC for 1.5 times per day or more (Ptrend = 0.001 for BCC and 0.04 for SCC). In contrast, consumption of non-citrus fruit and juice appeared to be inversely associated with risk of BCC and SCC. Our findings support positive associations between citrus consumption and risk of cutaneous BCC and SCC in two cohorts of men and women, and call for further investigations to better understand the potential photocarcinogenesis associated with dietary intakes.

Original languageEnglish (US)
Pages (from-to)1162-1168
Number of pages7
JournalCarcinogenesis
Volume36
Issue number10
DOIs
StatePublished - Aug 16 2015

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Citrus
Basal Cell Carcinoma
Squamous Cell Carcinoma
Skin
Confidence Intervals
Men's Health
Nurses
Prospective Studies
Health

ASJC Scopus subject areas

  • Cancer Research

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Citrus consumption and risk of basal cell carcinoma and squamous cell carcinoma of the skin. / Wu, Shaowei; Cho, Eunyoung; Feskanich, Diane; Li, Wen Qing; Sun, Qi; Han, Jiali; Qureshi, Abrar A.

In: Carcinogenesis, Vol. 36, No. 10, 16.08.2015, p. 1162-1168.

Research output: Contribution to journalArticle

Wu, S, Cho, E, Feskanich, D, Li, WQ, Sun, Q, Han, J & Qureshi, AA 2015, 'Citrus consumption and risk of basal cell carcinoma and squamous cell carcinoma of the skin', Carcinogenesis, vol. 36, no. 10, pp. 1162-1168. https://doi.org/10.1093/carcin/bgv109
Wu, Shaowei ; Cho, Eunyoung ; Feskanich, Diane ; Li, Wen Qing ; Sun, Qi ; Han, Jiali ; Qureshi, Abrar A. / Citrus consumption and risk of basal cell carcinoma and squamous cell carcinoma of the skin. In: Carcinogenesis. 2015 ; Vol. 36, No. 10. pp. 1162-1168.
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abstract = "Animal experiments have demonstrated the photocarcinogenic properties of furocoumarins, a group of naturally occurring chemicals that are rich in citrus products. We conducted a prospective study for citrus consumption and risk of basal cell carcinoma (BCC) and squamous cell carcinoma (SCC) of the skin based on data from 41 530 men in the Health Professionals Follow-up Study (1986-2010) and 63 759 women in the Nurses' Health Study (1984-2010) who were free of cancers at baseline. Over 24-26 years of follow-up, we documented 20 840 incident BCCs and 3544 incident SCCs. Compared to those who consumed citrus products less than twice per week, the pooled multivariable-adjusted hazard ratios were 1.03 [95{\%} confidence interval (95{\%} CI): 0.99-1.08] for BCC and 1.14 (95{\%} CI: 1.00-1.30) for SCC for those who consumed two to four times per week, 1.06 (95{\%} CI: 1.01-1.11) for BCC and 1.15 (95{\%} CI: 1.02-1.28) for SCC for five to six times per week, 1.11 (95{\%} CI: 1.06-1.16) for BCC and 1.22 (95{\%} CI: 1.08-1.37) for SCC for once to 1.4 times per day and 1.16 (95{\%} CI: 1.09-1.23) for BCC and 1.21 (95{\%} Cl: 1.06-1.38) for SCC for 1.5 times per day or more (Ptrend = 0.001 for BCC and 0.04 for SCC). In contrast, consumption of non-citrus fruit and juice appeared to be inversely associated with risk of BCC and SCC. Our findings support positive associations between citrus consumption and risk of cutaneous BCC and SCC in two cohorts of men and women, and call for further investigations to better understand the potential photocarcinogenesis associated with dietary intakes.",
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