In the United States, you must be at least 21 years old to legally smoke or use recreational marijuana. Recreational marijuana use by children and teenagers is not legal anywhere in the U.S.
. Some states allow medical marijuana use for minors under specific conditions, but recreational use is restricted to adults 21 and older
. In Canada, the legal age is generally 18 or 19 depending on the province, but youth aged 13-17 are warned about the health risks of cannabis use due to brain development continuing until around age 25
. To summarize:
- U.S. recreational marijuana use: Minimum age 21 in all states where it is legal.
- U.S. medical marijuana use: Possible for minors under strict conditions in some states.
- Canada recreational marijuana use: Usually 18 or 19 years old.
- Youth risks: Cannabis use before 25 can harm brain development and increase risk of addiction
Thus, to legally smoke weed recreationally, you must be at least 21 years old in the U.S.
