Youth escaping limits on drinking: binging in Mexico

Area of Science:

• Public Health
• Border Studies
• Substance Abuse Research

Background:

• A Tijuana nightclub district attracts thousands of young Southern Californians weekly due to lax alcohol laws and low prices.
• This cross-border traffic presents a significant public health concern regarding alcohol consumption and impaired driving.
• Understanding the scope of this issue is crucial for developing effective community interventions and responses.

Purpose of the Study:

• To quantify the extent of cross-border binge drinking by young adults traveling from Southern California to Tijuana.
• To assess the prevalence of high blood alcohol content (BAC) among individuals returning from Tijuana.
• To provide data supporting community strategies aimed at mitigating the public health risks associated with this phenomenon.

Main Methods:

• Conducted anonymous, voluntary breathalyzer surveys over one year among northbound border crossers.
• Randomly recruited drivers and pedestrians between 12 a.m. and 4 a.m. on selected Wednesdays, Fridays, and Saturdays.
• Collected data via standardized verbal interviews and alcohol breath tests from 5,145 participants (87.4% recruitment rate).

Main Results:

• Over 6,500 individuals cross back into the US nightly from Tijuana after drinking or visiting establishments.
• Pedestrians exhibited the highest prevalence of high BAC, with over 30% testing at or above 0.08%.
• A significant portion of these pedestrians return to vehicles parked in the US and subsequently drive.

Conclusions:

• The volume of young binge drinkers crossing the Tijuana border is substantial, creating a considerable public health problem.
• Impaired driving by individuals returning from Tijuana poses a serious risk, particularly as many drive vehicles home.
• The border location offers a unique setting for precise scientific estimation of this cross-border public health issue.