While human studies are still necessary to confirm this benefit, tests in rats and mice indicate that compounds in the avocado seed have anti-tumor properties. According to the “Encyclopedia of Common Natural Ingredients Used in Food, Drugs, and Cosmetics,” avocado seeds possess a condensed flavonol that is responsible for this property.

Antioxidant Properties

Avocados are among a group of fruits that provide strong antioxidant benefits from their seeds. A 2003 study at the National University of Singapore concluded that avocado seed, among other fruit seeds including mango, tamarind and jackfruit, have an even greater level of antioxidant activity than the more commonly eaten parts of the fruits. The seeds may contain more than 70% of the antioxidants found in the entire fruit.

According to One Green Planet, the seed (or stone) is actually “where most of the fruit’s nutritional potential resides”.

“The seed holds 70% of the avocado’s antioxidants, including the well-respected polyphenols associated with green tea,” the site states.

“It has antioxidants that help regulate intestinal function and have even been shown to prevent tumour growth.

“Additionally, the oil within ups the amount of collagen in our skin, keeping it young and wrinkle-free, as well as shining up the hair so that we remain good-looking, too.”