Coming of age
In the United States, teenagers are allowed to drive at 16 in all states except New Jersey, which requires drivers to be 17 and older, and sometimes receive the responsibility of owning their own car. Teenagers may drive at age 15 in Idaho and Montana. At 16, teenagers are also old enough to donate blood and work in most establishments. At 18 one is legally considered an adult and can vote and join the military. The legal age for purchasing and consuming alcohol and recreational marijuana, the latter of which is only legal in the District of Columbia, Colorado, Oregon, Washington, California, Hawaii, Massachusetts, Nevada, and Alaska, is 21. The legal age for purchasing and consuming tobacco products is 18 in most states; 19 in Alabama, Alaska and Utah; and 21 in California, New Jersey, Oregon, Hawaii and Maine. Multiple localities have also raised the minimum purchase age independent of state laws.
Legal drinking age controversy in the United States
Alcohol is the most commonly used and abused drug among youth in the United States, more than tobacco and illicit drugs. Although the purchase of alcohol by persons under the age of 21 is illegal, people aged 12–20 years old drink 11% of all alcohol consumed in the US. Among the 14 million adults aged 21 or older who were classified as having alcohol dependence or abuse in the past year, more than 13 million had started using alcohol before age 21. Since 1984, when the National Minimum Drinking Age Act made the minimum legal drinking age for every state in the nation 21, there has been a steady increase in prevalence of alcohol use, heavy use, and frequent use among underage drinkers as the age increases. Across all ages, highest rates for alcohol abuse occur among persons 19 years old due to illegality of their behavior, and peak alcohol dependence is age 22.