30 Affordable Healthy Foods We Should All Eat More

3. Spinach

Best Place to Buy: Whole Foods Market

Avg. Price: $3.20 per frozen package*

Benefits: Boosts the immune system

Spinach has immune-supporting vitamins and minerals like vitamins E and magnesium. Your immune system protects against germs, toxins, and cell mutations.

If you want to lose weight, add spinach to your diet. Its fiber keeps you full while being low-calorie and helps regulate your digestive system.