1. Growth
a. Alcohol consumption can interfere with development of the young adult brain's frontal lobes, essential for functions such as emotional regulation, planning, and organization. When alcohol consumption interferes with this early adult brain development, the potential for chronic problems such as greater vulnerability to addiction, dangerous risk-taking behavior, reduced decision-making ability, memory loss, depression, violence, and suicide is greater. http://drinkingage.procon.org/#background b. A research about how alcohol affected adult and adolescent brain. http://www.chooseresponsibility.org/frequently_asked_questions/#raised 2. Safety
a. Traffic
The National Highway Traffic Safety Administration (NHTSA) wrote in its 2008 publication "Traffic Safety Facts" on www.nrd.nhtsa.dot.gov:
"NHTSA estimates that the 21-year-old minimum drinking age laws have reduced traffic fatalities involving drivers 18 to 20 years old by 13 percent and have saved an estimated 27,052 lives [from 1975-2008]." http://drinkingage.procon.org/#background b. Death
Particularly worrisome among adolescents is the high prevalence of binge drinking... Underage drinkers consume, on average, 4 to 5 drinks per occasion about 5 times a month. By comparison, drinkers age 26 and older consume 2 to 3 drinks per occasion, about 9 times a month. Underage drinking is a leading contributor to death from injuries, which are the main cause of death for people under age 21. Each year, approximately 5,000 persons under the age of 21 die from causes related to underage drinking. These deaths include about 1,600 homicides and 300 suicides http://drinkingage.procon.org/view.answers.php?questionID=1610 c. The reason why we firstly have the 21 law
First, we showed that, as documented by other authors, when states raised their drinking ages to 21 in the 1970s and 1980s there were significant decreases in both alcohol consumption and fatalities among 18- to