Spinach

Spinach is an exceptional source of vitamin K and vitamin A. A 100-gram serving provides 181% of the recommended daily allowance for vitamin K and 56% for vitamin A. This leafy green also contains high concentrations of lutein and zeaxanthin, which are beneficial for eye health. These compounds have been clinically linked to a reduced risk of age-related macular degeneration, offering protection that stands out among leafy greens. While highly nutrient-dense, spinach's iron is non-heme, meaning it's not as readily absorbed as the iron found in animal products.