One cup of blueberries (about 148 g) provides roughly 85 calories, 4 g of fiber, and vitamin C, per USDA FoodData Central. Berries are low in calorie density and high in polyphenols, making them a nutrient-rich sweet swap for desserts or sugar. Use them fresh or frozen (unsweetened) in yogurt, oatmeal, or smoothies.

Key facts:

  • 1 cup blueberries: ~85 kcal
  • Fiber: ~4 g
  • Rich in polyphenols
  • Smart sweet swap