Average retail price per pound: $1.11

Celery is an age-old weight loss food because its net loss in calories is higher than its net gain in calories. It takes more energy to break down celery, so when you eat it, you burn calories. Celery is high in phytonutrient antioxidants, which have anti-inflammatory properties. Research has shown celery is a great source of flavonols and flavone antioxidants.