Smoking is not associated with increased incidence of cancers in?

Options

A. Throat
B. Large intestine
C. Lungs
D. Mouth

Answer

To solve the question "Smoking is not associated with increased incidence of cancers in?", we need to analyze the effects of smoking on various parts of the body and the types of cancer it is known to influence.

### Step-by-Step Solution:

1. **Understanding the Effects of Smoking**:
- Smoking is known to have detrimental effects on various organs and is a significant risk factor for several types of cancer. It primarily affects the respiratory system, leading to lung cancer, and also has implications for cancers of the throat, mouth, and other areas.

2. **Identifying Types of Cancer Associated with Smoking**:
- The most common cancers associated with smoking include:
- Lung cancer
- Throat cancer
- Mouth cancer
- Esophageal cancer
- Bladder cancer
- These cancers are directly linked to the harmful substances in tobacco smoke.

3. **Considering the Options**:
- We need to evaluate the options provided in the question to determine which one is least likely to be associated with smoking-related cancers.
- For instance, cancers of the lungs, mouth, and throat are well-documented consequences of smoking.

4. **Analyzing the Large Intestine**:
- The large intestine (colon) is primarily involved in digestion and absorption of water and nutrients. While there are some studies that suggest a possible link between smoking and colorectal cancer, it is not as strong as the associations with lung and throat cancers.

5. **Conclusion**:
- Based on the analysis, the correct answer to the question is the option that indicates the large intestine, as smoking is not as strongly associated with increased incidence of cancer in this area compared to others.

### Final Answer:
The correct answer is **Option 2** (Large Intestine).