Hallberg's Picture of Health: Do fitness trackers work?

Fitness trackers
Fitness trackers, from left, Basis Peak, Adidas Fit Smart, Fitbit Charge, Sony SmartBand, and Jawbone Move, are posed for a photo next to an iPhone.
Bebeto Matthews | AP 2014 file

Millions of people are using wearable fitness trackers, which are purported to help with weight loss.

But a new study on diet and fitness from the University of Pittsburgh found that those in a trial without fitness trackers actually lost more weight than those who used one.

So, do these fitness trackers actually work or can they get in the way of weight loss?

MPR News' regular medical analyst Dr. Jon Hallberg joined All Things Considered host Tom Crann to discuss.

Use the audio player above to hear their chat.