Fruits are the means by which flowering plants (also known as angiosperms) disseminate their seeds. ... In botanical usage, the term "fruit" also includes many structures that are not commonly called "fruits", such as nuts, bean pods, corn kernels, tomatoes, and wheat grains.

Citrus fruits and berries may be especially powerful for preventing disease. A 2014 study ranked “powerhouse” fruit and vegetables by high nutrient density and low calories. Lemons came out top of the list, followed by strawberry, orange, lime, and pink and red grapefruit.