Define disease

Explanation

### Step-by-Step Text Solution:

1. **Understanding Health**: Before defining disease, it's important to understand the concept of health. Health refers to the overall physical, mental, social, and emotional well-being of an individual. A healthy person typically maintains a balanced diet, exercises regularly, and practices good hygiene.

2. **Definition of Disease**: A disease can be defined as a condition in which one or more organs of the body are not functioning properly. This dysfunction can lead to various symptoms and health issues.

3. **Pathogens**: Diseases are often caused by organisms known as pathogens. These pathogens can include viruses, bacteria, and fungi, which invade the body and disrupt normal functioning.

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