About a half-billion adults in the world have diabetes. This chronic health condition causes severe hardships to patients and contributes substantially to healthcare costs.

It's no wonder that many companies continue developing innovative products to help diabetes patients manage the disease. One of them is Tandem Diabetes Care (NASDAQ: TNDM), a medical device specialist that markets insulin pumps.

Though Tandem Diabetes Care has not performed well on the stock market over the past year, there is hope for the company. Let's find out why Tandem could still be an excellent investment for patient investors.

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Source Fool.com