Consumption of drug and alcohol affects the person's mental and physical health very badly. List the warning signs of alcohol or drug abuse.

Explanation

### Step-by-Step Text Solution:

1. **Introduction to the Problem**:
- The consumption of drugs and alcohol can severely impact both mental and physical health. Recognizing the warning signs of abuse is crucial for early intervention.

2. **Physical Signs**:
- **Pupil Changes**: One of the first signs can be the alteration in the size of the pupils. They may become either enlarged (dilated) or constricted (smaller).
- **Weight Fluctuations**: Individuals may experience significant weight loss or weight gain due to changes in appetite and metabolism.
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