Increased asthmatic attacks in certain seasons are related to :

Options

A. Low temperature
B. Hot and humid environment
C. Eating fruits preserved it tin containers
D. Inhalation of seasonal pollen

Answer

**Step-by-Step Solution:**

1. **Understanding Asthma**: Asthma is a respiratory condition characterized by difficulty in breathing, wheezing, and other symptoms such as watery eyes and a runny nose. It is often triggered by various environmental factors.

2. **Identifying Seasonal Triggers**: Asthmatic attacks can increase during certain seasons due to specific environmental changes. One common trigger is the presence of pollen in the air, which is prevalent during certain times of the year, especially spring and fall.

3. **Role of Pollen**: Pollen grains, which are released by plants during their reproductive cycle, can act as allergens. When inhaled by individuals who are sensitive or allergic to them, these pollen grains can provoke an immune response.

4. **Immune Response**: The inhalation of pollen leads to the release of chemicals in the body, such as histamine and serotonin. These chemicals are responsible for allergic reactions and can cause inflammation and constriction of the airways, leading to asthma symptoms.

5. **Conclusion**: Given the options provided, the increased asthmatic attacks in certain seasons are most closely related to the inhalation of seasonal pollen. Therefore, the correct answer is option D: Inhalation of seasonal pollen.

**Final Answer**: D. Inhalation of seasonal pollen.

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