Give reason why doctors insist on adding green leafy vegetables to the diet.

Explanation

### Step-by-Step Solution:

1. **Understanding a Balanced Diet**:
- A balanced diet is essential for good health. It includes a variety of foods that provide the necessary nutrients our body needs to function properly.

2. **Nutritional Value of Green Leafy Vegetables**:
- Green leafy vegetables are packed with essential vitamins and minerals. They are particularly rich in:
- Vitamin A: Important for vision and immune function.
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