**Alcohol** affects people differently depending on various factors, and one of the most important is **age**. People **under 18 years old** and those **over 65 years old** are more vulnerable to the effects of alcohol. This is because alcohol tends to have a more significant impact on these age groups, affecting their ability to drive safely.

- **Under 18 years old**: Their bodies are still developing, which can make alcohol have a more pronounced and dangerous effect.
- **Over 65 years old**: With age, the body processes alcohol less efficiently, increasing the risk of adverse effects.

Additionally, these age groups also have a **higher risk of traffic accidents**. Young people and those over 65 years old are more likely to be involved in accidents, making alcohol consumption even more dangerous for them.

For these reasons, it is crucial that people in these age groups are especially careful with alcohol consumption, particularly if they are going to drive.