Which insecticide is more hazardous to human health?

Options

A. Rotenone
B. Pyrethrum
C. DDT
D. Humulin

Answer

To determine which insecticide is more hazardous to human health among the options given (Rotenone, Pyrethrum, DDT, and Humulin), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Types of Insecticides**:
- The first step is to categorize the insecticides mentioned: Rotenone, Pyrethrum, DDT, and Humulin.
- Rotenone and Pyrethrum are considered natural insecticides, while DDT is an organochlorine pesticide, and Humulin is a form of insulin used for diabetes management.

2. **Research the Effects of Each Insecticide**:
- Investigate the health impacts of each insecticide.
- Rotenone has been linked to neurotoxicity and is harmful to aquatic life.
- Pyrethrum is generally considered less harmful but can cause allergic reactions in some individuals.
- DDT, however, is known for its long-term environmental persistence and has been associated with various health issues, including cancer and reproductive problems.

3. **Focus on Organochlorine Pesticides**:
- Recognize that DDT is an organochlorine pesticide, which is notorious for its hazardous effects on human health and the environment.
- Organochlorine pesticides are known to bioaccumulate in the food chain and can lead to serious health risks.

4. **Conclusion**:
- Based on the research and comparison, it is evident that DDT is the most hazardous insecticide to human health among the options provided.
- The uncontrolled use of DDT has been linked to various health problems, making it a significant concern.

5. **Final Answer**:
- Therefore, the insecticide that is more hazardous to human health is **DDT**.