Alcohol consumption and risk of cutaneous basal cell carcinoma in women and men: 3 prospective cohort studies.

BACKGROUND

Alcohol consumption has been associated with an increased prevalence of sunburn, which is an established skin cancer risk factor.

OBJECTIVE

We investigated whether alcohol consumption is associated with risk of cutaneous basal cell carcinoma (BCC).

DESIGN

We conducted a prospective analysis on alcohol consumption and risk of BCC on the basis of data from 167,765 women in the NHS (Nurses' Health Study) (1984-2010) and NHS II (1991-2011) and 43,697 men in the Health Professionals Follow-Up Study (1986-2010). Alcohol intake was repeatedly assessed every 2-4 y over the follow-up period. HRs and 95% CIs for BCC in association with alcohol intake were computed with the use of Cox proportional hazards models with adjustment for sun exposure and other skin cancer risk factors.

RESULTS

A total of 28,951 incident BCC cases were documented over 3.74 million person-years of follow-up. Increased alcohol intake was associated with increased BCC risk in both women and men (both P-trend < 0.0001). Pooled multivariable-adjusted HRs over increasing cumulative averaged alcohol intake categories were 1.00 (reference) for nondrinkers, 1.13 (95% CI: 1.06, 1.20) for 0.1-9.9 g/d, 1.24 (95% CI: 1.14, 1.35) for 10.0-19.9 g/d, 1.27 (95% CI: 1.20, 1.35) for 20.0-29.9 g/d, and 1.22 (95% CI: 1.15, 1.30) for ≥30.0 g/d (P-trend < 0.0001, P-heterogeneity by study = 0.10 ). The association remained consistent when we used alcohol intakes over different latency periods (0-4, 4-8, 8-12, and 12-16 y) as exposures and over categories of sun exposure-related factors. In the individual alcoholic beverages, white wine and liquor were positively associated with BCC risk.

CONCLUSION

Alcohol consumption is associated with increased risk of cutaneous BCC in both women and men.