Immunodeficiency can result from

Options

A. Gene mutation
B. Infection
C. Malnutrition
D. All the above

Answer

**Step-by-Step Text Solution:**

1. **Understanding Immunodeficiency**: Immunodeficiency refers to a state where the immune system's ability to fight infectious disease is compromised or entirely absent. This can lead to increased susceptibility to infections and diseases.

2. **Identifying Causes of Immunodeficiency**:
- **Gene Mutation**: Some immunodeficiency disorders are inherited due to mutations in specific genes. These mutations can be passed down from one or both parents to their offspring, leading to primary immunodeficiency disorders.
- **Infection**: Certain infections can lead to immunodeficiency. A well-known example is HIV (Human Immunodeficiency Virus), which specifically attacks T helper cells, crucial for the immune response, thereby weakening the immune system.
- **Malnutrition**: Nutritional deficiencies can also result in immunodeficiency. For instance, malnutrition can lead to Nutritional Acquired Immunodeficiency Syndrome (NAIDS), which compromises the immune system's function.

3. **Conclusion**: Since immunodeficiency can arise from gene mutations, infections, and malnutrition, the correct answer to the question is that immunodeficiency can result from **all of the above**.

**Final Answer**: Immunodeficiency can result from gene mutation, infection, malnutrition, and therefore, the answer is **all of the above**.

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