You're right that it can be challenging for some people to acknowledge substances like alcohol, caffeine, and nicotine as poisons, especially because they are commonly used and socially accepted. However, it's important to remember that the term "poison" is often associated with the dose and context in which a substance is used.

Alcohol: While moderate alcohol consumption may not be harmful to most adults, excessive and heavy drinking can lead to a range of health issues, including liver damage, addiction, impaired judgment, and accidents. In high doses, alcohol can indeed act as a poison to the body's systems.

Caffeine: Caffeine is found in coffee, tea, energy drinks, and various other products. While low to moderate caffeine intake can provide a temporary energy boost and even some health benefits, excessive consumption can lead to issues like insomnia, nervousness, jitters, increased heart rate, and dependency. Extremely high doses of caffeine can also be toxic and even fatal.

Nicotine: Nicotine is found in tobacco products such as cigarettes, cigars, and smokeless tobacco. It is a highly addictive substance that can lead to serious health problems, including lung diseases, heart diseases, and cancers. Nicotine poisoning can occur from consuming too much nicotine in a short period, which can result in symptoms like nausea, vomiting, increased heart rate, and in severe cases, seizures.

It's crucial to approach these substances with awareness and moderation. Recognizing their potential risks and understanding the effects they can have on the body and mind is important for making informed decisions about their use. If you're struggling with substance use or addiction, seeking help from healthcare professionals, support groups, or counselors can provide valuable guidance and assistance.