Antioxidants in apples protect against oxidative stress and free radical damage. Key compounds include:

1. **Quercetin**: An anti-inflammatory flavonoid mainly in apple skin.

2. **Catechin**: Boosts brain and muscle function, also found in green tea.

3. **Chlorogenic Acid**: Lowers blood sugar and aids weight management by slowing glucose release.

4. **Phlorizin**: Regulates blood sugar, primarily in apple skin.

Antioxidant levels differ by apple type and growing conditions, but....