Routine activities theory proposes that young unmarried males are at highest risk of victimization due to their nightly activities away from home. These activities expose them to offenders, risky behaviors like drug and alcohol use, and delinquent situations. Their lifestyles and routines therefore substantially increase their risk of victimization. Exposure to environmental contaminants like lead, mercury, and food dyes has also been linked to aggressive and antisocial behavior in studies. Living in neighborhoods with high poverty, crime, and pollution increases the likelihood that youth will engage in criminal acts.