The US government has influenced public policy on smoking for decades. How did changes in public policy affect smoking?

People must now be at least 19 years old to purchase cigarettes.
There is no longer any risk of illnesses from second-hand smoke.

While it is true that the US government has influenced public policy on smoking, the statements you have made about the effects of these changes are not entirely accurate. Changes in public policy have had a significant impact on smoking rates and the perception of smoking, but they do not necessarily eliminate all risks associated with smoking. Let's examine the actual effects of public policy changes on smoking:

1. Minimum age requirements: One notable change in public policy is the increase in the minimum age to purchase cigarettes. In some states, the legal age has been raised to 21. This policy change aims to prevent young individuals from starting smoking and reduce access to tobacco products. Raising the minimum age has shown to be effective in reducing smoking initiation among youth and young adults.

2. Restrictions on public smoking: The implementation of laws and regulations restricting smoking in public places has significantly reduced exposure to second-hand smoke. This policy change protects non-smokers from the harmful effects of tobacco smoke and creates a healthier environment. However, it is important to note that the risk of illnesses from second-hand smoke is not entirely eliminated, but rather significantly reduced.

3. Tobacco taxes and advertising restrictions: Public policy has also involved increasing taxes on tobacco products and implementing restrictions on tobacco advertising. Higher cigarette prices through increased taxes can discourage smoking by making it less affordable, especially for lower-income individuals. Furthermore, advertising restrictions aim to limit the promotion and appeal of smoking, particularly among young people who are more susceptible to marketing tactics.

Overall, changes in public policy have played a crucial role in reducing smoking rates, preventing smoking initiation among young individuals, and protecting non-smokers from second-hand smoke. These policies have contributed to public health improvements by raising awareness about the risks associated with smoking and creating a less permissive environment for tobacco use.