It also says organic are better because they have a wider variety of the good gut bacteria.
Action News asked Emily Rubin, a registered dietitian with Jefferson University Hospital for her insight.
How much of the apple do you eat?
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Rubin says eating the core and skin are definitely beneficial but she cautions against eating the seeds.
The seeds contain amygdalin, a substance that releases cyanide when it comes into contact with human digestive enzymes.
A small amount is okay but if you go overboard, it can cause problems.
But eating an apple, core and skin has numerous health benefits. It has pre-biotics and pro-biotics, plus antioxidants and fiber.