Alcohol - One of the most common causes of intoxication, leading to numerous health complications and accidents. Drugs - Both prescription and illicit drugs can cause severe intoxication if misused. Chemicals - Household chemicals, pesticides, and industrial substances can lead to poisoning. Food - Contaminated food can cause foodborne illnesses and intoxication. Environmental Toxins - Exposure to pollutants and hazardous materials can result in intoxication.