Air pollution does not leads to

Question

Accepted Answer

The correct answer is **1. Gastro-intestinal diseases**.

### Explanation:

Air pollution is primarily associated with the inhalation of harmful pollutants that can lead to various health issues, particularly affecting the respiratory system. Let's analyze each option:

1. **Gastro-intestinal diseases**: Air pollution does not directly lead to gastrointestinal diseases. While environmental factors can influence overall health, gastrointestinal diseases are more commonly related to factors such as diet, infections, and other non-airborne pathogens. Therefore, this option is correct as air pollution is not a direct cause of gastrointestinal diseases.

2. **Cancer**: Certain air pollutants, such as benzene and formaldehyde, are known carcinogens. Long-term exposure to polluted air can increase the risk of various types of cancer, particularly lung cancer. Thus, this option is incorrect as air pollution can lead to cancer.

3. **Respiratory diseases**: Air pollution is a well-documented cause of respiratory diseases, including asthma, chronic obstructive pulmonary disease (COPD), and other lung-related conditions. Pollutants such as particulate matter (PM), nitrogen oxides, and sulfur dioxide can exacerbate these diseases. Therefore, this option is also incorrect.

4. **Corrosion of buildings**: Air pollution can lead to the corrosion of buildings and infrastructure, particularly through acid rain and the deposition of harmful chemicals. This is a significant concern in urban areas with high levels of pollution. Hence, this option is incorrect as well.

### Conclusion:
In summary, air pollution is linked to cancer, respiratory diseases, and the corrosion of buildings, but it does not directly lead to gastrointestinal diseases. Therefore, the correct answer is option 1.