A nut is a fruit composed of an inedible hard shell and a seed, which is generally edible. In general usage and in a culinary sense, a wide variety of dried seeds are called nuts, but in a botanical context "nut" implies that the shell does not open to release the seed.

Experts suggest that nuts and dry fruits are one of the healthiest snack options around. According to the book Healing Foods by DK Publishing, some of the highest antioxidant levels of all plant foods are found in nuts. Antioxidants are vital in the fight against inflammation and cell and tissue damage caused by free radicals. Nuts are also rich in fiber, healthy fats, vitamins and minerals and research shows they help to lower cholesterol, improve blood vessel function and benefit muscles and joints too. Some nuts may be high in fats, which is why they are advised to be consumed in limited quantities and at a designated time so that it does not affect your health. Source: Click here