Ever since late 2013, when Whole Foods Market (NASDAQ:WFM) released third-quarter earnings that disappointed Wall Street, financial journalists -- including many here at The Motley Fool -- have questioned whether the supermarket chain's stock is still worth owning.

Whether it is due to lower prices for organic goods or encroachment by natural/organic upstarts such as Sprouts Farmers Market and Natural Grocers by Vitamin Cottage, many believe Whole Foods' days of heady growth are over.

In the video below, the Fool's Brian Stoffel -- who has been following the company for years -- shares his thoughts on these concerns, and what they might mean for investors.

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John Mackey, co-CEO of Whole Foods Market, is a member of The Motley Fool's board of directors. Brian Stoffel owns shares of Whole Foods Market. The Motley Fool recommends and owns shares of Whole Foods Market. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.