Fitness trackers may not aid weight loss, study finds

Research shows a simple diet and exercise plan is more effective weight loss strategy than using Fitbit and Jawbone devices

They have become the must-have for fitness fans but wearable gadgets that track users' physical activity may not help people lose weight, a new study has found.

Instead of motivating users to do more exercise over the day, the two-year survey found the devices were actually less effective at encouraging people to lose weight than simply following a diet and exercise plan.