Research

Adherence

An interactive smartphone app-based lifestyle intervention combining wearable activity tracking, smart scales, food photography logs, and physician coaching produces statistically significant and clinically meaningful weight loss (-7.16 kg) and improved metabolic health (waist circumference, HbA1c) compared to conventional outpatient visits alone.

Use a smartphone app that integrates a smart scale and activity tracker. Log your meals with photos rather than manual entries. Engage with a coach and peers through the app. Attend regular check-ins. This combination of automated tracking and human support can lead to significant weight loss and improved metabolic health.

ModerateSupportsMEDIUM confidence
At 6 months, the intervention group experienced a statistically significant weight change of −7.16 ± 1.78 kg... which differed from the weight change in controls by −4.16 ± 2.01 kg... Waist circumference and hemoglobin A1c significantly improved... This app‐based electronically delivered lifestyle intervention produced statistically significant, clinically meaningful weight loss and improved metabolic health.
Cherie Vaz et al. · Obesity Science & Practice · 2021

Why this rating

Randomized controlled trial but with a small sample size (n=28) and short duration (6 months).

Source

A randomized controlled trial of an innovative, user‐friendly, interactive smartphone app‐based lifestyle intervention for weight loss

Cherie Vaz et al. · Obesity Science & Practice · 2021

DOI 10.1002/osp4.503

rct · n=28Cited 27×
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

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