Activity trackers not reliable for weight loss

The study specifically investigated whether regular use of commercially available activity trackers is effective for producing and sustaining weight loss. The study followed 470 individuals between the ages of 18 and 35 with a body mass index between 25 and 39 at the start of the trial. Approximately 77 per cent of participants were women and 29 per cent were from minority communities. According to the study, published in the journal JAMA, all participants were placed on low-calorie diets, prescribed increases in physical activity, and received group counselling sessions on health and nutrition.