Los peligros de fumar

The video discusses the widespread habit of smoking and its severe health risks. It highlights the presence of over 4000 harmful chemicals in cigarettes, many of which are poisonous and increase the risk of lung cancer. Smoking also leads to lung damage, causing diseases like bronchitis and emphysema, and results in physical changes such as stained teeth and wrinkles. Nicotine, a highly addictive substance in cigarettes, makes quitting difficult. The video emphasizes that smoking kills half of its users and advocates for quitting or never starting to protect health.

What is the statistic regarding smoking-related deaths mentioned in the text?

What is the recommended action for smokers to protect their health?