In the 1970s, provincial and state decision-makers in Canada and the United States adopted lower MPs (which were set at 21 in most provinces, territories and states) to match the legal age of majority – typically 18. As a result, MPs have been reduced in every Canadian province [and] in more than half of the U.S. states. In Canada, however, two provinces, Ontario (1979) and Saskatchewan (1976), rapidly increased their numbers of subsequent MPs aged 18 to 19 in response to some studies showing a link between reducing the age of alcohol consumption and increasing alcohol-related harm among adolescents and young adults, including an increase in motor vehicle accidents (AVMs) and alcohol poisoning among high school students. As a result of MLDA reductions in the United States, research in several states has provided convincing evidence of a sharp increase in fatal and non-fatal stroke rates occurring immediately after the introduction of a lower drinking age. These scientific findings increased public pressure on lawmakers to increase the number of MPs and, in response, the federal government introduced the Minimum Drinking Age Act of 1984, which imposed a reduction in highway funding for states if they did not increase their MLDA to 21. All states completed and implemented a 21-year MLDA until 1988.  Chemically, alcohol is an organic compound that is formed when grains, vegetables or fruits are allowed to ferment. Medically, alcohol is classified as a sedative (as opposed to a stimulant like caffeine or a hallucinogen like psilocybin) with a variety of physiological effects. Most of these effects involve slowing down or hindering bodily functions. Alcohol, for example, inhibits motor functions and slows reaction times.
The more you drink, the slower and more clumsy they become. Similarly, alcohol also hinders the brain`s communication pathways. While a drink or two can make a person looser and more relaxed, continued use leads to symptoms such as slurred speech, cloudy thinking, and poor decision-making. Excessive alcohol consumption can also lead to additional complications, including vomiting, memory impairment, drowsiness to the point of “fainting” and, in extreme cases, alcohol intoxication. Finally, long-term excessive alcohol consumption can contribute to serious physiological conditions, including (but not limited to) pancreatitis, cardiomyopathy, liver disease, hyperglycemia, cancer, and various neurological disorders. The legal age for alcohol consumption and purchase in the Faroe Islands is 18 years.  As can be seen in the table below, since the repeal of prohibition in 1933, there has been a lot of volatility in the age of alcohol consumption in the states. Shortly after the 21st Amendment was ratified in December, most states set their purchase age at 21, as that was the voting age at the time. Most of these limits remained constant until the early 1970s.
From 1969 to 1976, about 30 states generally lowered their purchasing age to 18. This was mainly due to the fact that the voting age was lowered from 21 to 18 with the passage of the 26th Amendment in 1971. Many states began lowering their minimum age for alcohol consumption in response, most of which occurred in 1972 or 1973.    Twelve states have maintained their purchasing age at 21 since the repeal of prohibition and have never changed it. People often believe that the minimum age for alcohol consumption in the United States is 21. However, people can legally drink at this age under many different conditions. The average (average) minimum legal age for alcohol consumption worldwide is 10.3 years. Ninety-six (96) countries/possessions have a minimum drinking age of zero. And among those with a higher legal minimum age for alcohol consumption, the average age is 18.6 years. In North America, the legal drinking age and purchase age vary between 18 and 21: the legal drinking age is 18 in Abu Dhabi (although a Ministry of Tourism law allows hotels to serve alcohol only to people over 21) and 21 in Dubai and the Northern Emirates (except Sharjah, where it is forbidden to drink alcohol).
 The following map shows the exceptions to the minimum age of 21 for alcohol consumption. It is forbidden to drink in public places, with the exception of designated consumption areas, regardless of age. Bangladesh Benin Cambodia Cameroon Canada: Varies by province and territory from 18 to 19 years old. China Comoros Congo Djibouti Gabon: On-site sales are limited to people aged 18 and over. Ghana Guinea-Bissau Haiti India: Varies by state from no legal sale to 25 years and older. Indonesia: Off-premises sales are limited to individuals 21 years of age and older. Lao People`s Democratic Republic: The sale of beer locally is limited to people aged 18 and over. Mali Niue: On-site sales are limited to people 18 years of age and older. Rwanda: On-site sales are limited to people 18 years of age and older. Sao Tome and Principe Sierra Leone Syria Timor-Leste Togo We probably don`t need to tell you that different countries have very different approaches to alcohol. Different tastes, different styles and, perhaps most obviously, different laws. Depending on where you go in the world, the drinking age can be 15, 18, 20 or 21.
In some countries, there may not be a legal drinking age. Some states do not allow people under the legal drinking age to consume alcohol in liquor stores or bars (usually the difference between a bar and a restaurant is that food is only served in the latter). Contrary to popular belief, few states prohibit minors and young adults from consuming alcohol in private places. The method of calculating the legal age for alcohol is slightly different from the Korean calculation of age, which adds another year to the age of the person, while this method only takes into account the month and day of birth, but only the year.  Police may search minors in public places and confiscate or destroy all alcoholic beverages in their possession. Incidents are reported to the legal guardian and child protection services, who may intervene in the best interests of the child. In addition, a fine is imposed on persons aged 15 and over.  But in other cases, parents are not allowed to legally provide alcohol to their children before the age of 21.
Therefore, these state laws hinder law-abiding parents. They cannot introduce their young adults to alcohol in a controlled family environment. To find out how old you need to be to drink anywhere in the world, we looked at the age of alcohol consumption in each country covered by the WHO World Alcohol Report 2014. Where WHO did not have data, age data provided by the International Alliance for Responsible Alcohol Consumption were used. In fact, public health researchers found that people`s age when they drank the first full serving of alcohol was significantly linked to knowledge of low-risk alcohol consumption and beverage counting. The level of knowledge about low-risk alcohol consumption and the frequency of beverage counting increased more with age at first alcohol use during adolescence than at the last period.  The legal drinking age is the minimum age at which a person can legally consume alcoholic beverages. The minimum age at which alcohol can be legally consumed may be different from the age at which it can be purchased in some countries. These laws vary from country to country and many laws have exceptions or special circumstances. Most laws only apply to alcohol consumption in public places, with alcohol consumption at home largely unregulated (one exception is the UK, which has a legal minimum age of five years for supervised drinking in private places).
Some countries also have different age limits for different types of alcoholic beverages.  Most countries have a minimum legal drinking age of 18 or 19.  U.S. alcohol laws regarding the minimum age of purchase have changed over time. In colonial America, there was usually no drinking age, and alcohol consumption by young teenagers was common, even in taverns.