**Alcohol** is one of the main causes of traffic accidents. This is because, when alcohol is consumed, it is distributed throughout the body via the bloodstream, particularly affecting the **brain** and **vision**. These alterations can decrease the driver's reaction time and judgment, increasing the risk of accidents.

In the table of traffic accident risk factors, **alcohol consumption** is mentioned as a human factor that significantly contributes to accidents, along with speeding and distractions. These human factors are responsible for between **70 and 90 out of every 100 accidents**, highlighting the severity of the problem.

Additionally, in the case of **young people**, alcohol consumption is one of the main causes of traffic accidents, especially in risky situations such as driving at high speeds, not respecting traffic rules, and during night or early morning hours. These accidents are more frequent during festive periods and weekends, suggesting a link with alcohol consumption in social situations.

Therefore, it is clear that alcohol is a critical factor in road safety and one of the main causes of traffic accidents.