Hari loss noticed in a cancer patient is due to the side effect of

Options

A. Chemotherapy
B. Radiotherapy
C. Immunotherapy
D. Physiotherapy

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the cause of hair loss in a cancer patient, specifically which treatment leads to this side effect.

2. **Identifying Cancer Treatments**: There are several common treatments for cancer, including:
- Surgery
- Chemotherapy
- Radiotherapy
- Immunotherapy

3. **Analyzing Each Treatment**:
- **Surgery**: This involves the physical removal of tumors but does not typically cause hair loss.
- **Immunotherapy**: This treatment boosts the immune system to fight cancer but is not commonly associated with hair loss.
- **Radiotherapy**: This uses radiation to target and kill cancer cells. While it can cause side effects, hair loss is not universally experienced and often depends on the area being treated.
- **Chemotherapy**: This involves the use of powerful drugs to kill cancer cells. Chemotherapy is well-known for causing hair loss as a side effect because it affects rapidly dividing cells, including those in hair follicles.

4. **Conclusion**: Based on the analysis, hair loss in cancer patients is primarily due to the side effects of chemotherapy.

5. **Final Answer**: The hair loss noticed in a cancer patient is due to the side effect of **chemotherapy**.