Top 10 Healthiest Foods in the World

What makes a food one of the healthiest in the world? Nutritionists look at nutrient density — the amount of vitamins, minerals, fiber, and beneficial compounds per calorie. Foods like kale, salmon, and blueberries pack an exceptional range of micronutrients into a small serving.

Can I eat all 10 of these foods every week? You don't need to eat all ten daily, but rotating through them throughout the week is a practical way to cover a wide spectrum of nutrients. Even adding two or three to your regular diet can make a noticeable difference.

Are fresh versions always better than frozen? Not always. Frozen blueberries, spinach, and salmon are typically frozen at peak freshness and retain most of their nutrients — sometimes more than fresh produce that has traveled long distances.

Sources: [USDA FoodData Central](https://fdc.nal.usda.gov/) · [Harvard T.H. Chan School of Public Health — The Nutrition Source](https://www.hsph.harvard.edu/nutritionsource/)