Avocado

Avocado seed contains twice as many antioxidants as the flesh and is a viable source of soluble fiber, which is an ally of those who try to keep a slim figure.

An excerpt from the article 21 facts about Avocado
Some claim that the avocado seed contains more valuable substances than the fruit itself. It is used after drying and pulverizing. It is estimated that about 70% of the amino acids are found in the seed. Phenolic compounds contained in the seed prevent stomach ulcers. It is a source of zinc, which protects men from prostate problems. According to the scientist, flavonoids in the seed inhibit the growth of cancer cells.