Palm trees have been around for ever, and their fruits are small, brown and very sweet; Dates. Dates make a great dessert, but they also make a good, nutritious meal in them selves!
They are rich in minerals such as calcium, iron and potassium, and full of vitamins like vitamin A, B and C, they are also Cholesterol free.
Dates are used to cure lots of digestive illnesses; they are good for fighting constipation and heart-burns. They are also a great cancer fighter.

The phosphorus in Dates helps keep the mind awake and working.
The sugar in Dates gives the body all the energy it needs to keep going, and at the same time, these sugars are easily digested and absorbed by the body, so the stomach doesn’t need so many complicated procedures to break them down and make use of them.

source: http://www.waleg.com/health/archives/001613.html