Definition of Chronic Toxicity:
- Chronic toxicity results from continuous or repeated exposure to a toxicant over a long period—usually more than 3 months and often extending to years.
- It is associated with cumulative damage and may involve irreversible health effects.
Characteristics of Chronic Toxicity:
- Prolonged exposure to low or moderate doses.
- Slow buildup of toxins in tissues (bioaccumulation).
- Delayed onset of symptoms, often surfacing months or years after initial exposure.
- Potential for irreversible damage to organs and systems.
Causes:
- Occupational exposure to industrial chemicals (e.g., lead, mercury, benzene).
- Lifestyle factors, such as smoking or alcohol abuse.
- Contaminated water or food sources, such as arsenic in groundwater.
- Environmental pollution or long-term use of certain drugs.
Examples:
- Lead poisoning from prolonged contact with battery components.
- Smoking causing lung cancer or chronic obstructive pulmonary disease (COPD).
- Chronic alcohol consumption leading to liver cirrhosis.
- Long-term pesticide exposure causing neurological damage or cancer.
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