A diet rich in fresh fruits and vegetables provides a large supply of these anti-oxidants, to help eliminate damaging free radicals. The highest concentrations are found in:

  1. Fruits 
  2. Leafy green vegetables
  3. Carrots
  4. Orange 
  5. Red peppers
  6. Spinach
  7. Tomatoes.  

Cooking can destroy some antioxidants and interfere with the body's ability to absorb them, so eating raw vegetables and fruit, and including sprouts in the diet can help. Steaming vegetables as opposed to frying, microwaving or boiling is also a good idea.