Technology & Digital Tools: Browse the Guides
Explore 7 guides covering apps, trackers, telehealth, testing, and ways to monitor progress.
Choose a guide for the question you have now, or return to the full weight-loss directory to explore other topics. This directory organizes general information. A listing is not a diagnosis, eligibility assessment, or endorsement of a tool or service.
Browse technology and digital tools guides
- Weight Loss Apps and Trackers
Tracking food and activity works for weight loss — Burke 2011 showed daily self-monitors lose roughly twice as much as inconsistent trackers — but the app matters less than the consistency. Here is the 2026 landscape (MyFitnessPal, Lose It, Cronometer, Noom, MacroFactor, Carbon, Zero, Apple Health, Fitbit, Oura), what the evidence says, and when tracking helps vs harms.
- Telehealth Weight Loss: GLP-1 Access and $50-$150/Month Cost
Telehealth weight loss programs offer virtual clinician visits, coaching, and GLP-1 prescriptions — typically $50-$150 a month plus medication cost.
- Body Composition Testing: DEXA, BIA, Bod Pod, Skinfolds, and Waist Circumference — What Each One Measures, Costs, and Gets Wrong
DEXA and Bod Pod get within ~2%BF of the reference. Home BIA scales drift 5–10% with hydration. Waist circumference predicts heart-disease outcomes better than %BF. Here's what each method measures, costs, and gets wrong.
- How to Track Weight Loss Progress: The Weekly Weigh-In Protocol, Progress Photos, Tape Measurements, and Non-Scale Signals That Actually Matter
Daily weigh-in read as a 7-day rolling average has the strongest evidence for weight-loss and maintenance outcomes (Zheng 2015 meta-analysis; Wing 2007). Waist circumference at the iliac crest independently predicts cardiovascular outcomes (Ross 2020). Here is the exact Monday-morning protocol, the six non-scale signals worth logging, and the disordered-eating caveats that decide whether daily weighing is the right tool for you.
- Calorie Tracking Accuracy: How Wrong Your Food Log Really Is (and How to Fix It)
Self-reported food logs under-report intake by roughly 20–40% in overweight adults (Lichtman 1992; Champagne 2002; Ravelli 2020). Packaged-food labels are FDA-allowed to be off by ±20% (21 CFR 101.9(g)); restaurant menu calories average within about ±20% but individual items are 200–500 kcal off (Urban 2010); and fitness-tracker calorie-burn numbers are ±15–90% depending on device (Shcherbina 2017). A 1,800 kcal in / 2,300 kcal out log can be a real energy balance near break-even. This guide gives the sources of error, the evidence, a 6-row error-stacking table, six concrete accuracy lifts, an 'I'm tracking and still not losing' 5-question audit, and the eating-disorder carveout.
- Continuous Glucose Monitors for Weight Loss: What Stelo, Lingo, Dexcom, and FreeStyle Libre Actually Tell You
A continuous glucose monitor measures interstitial glucose every 1 to 5 minutes. In type 2 and type 1 diabetes it clearly improves outcomes and is standard of care. For weight loss in adults without diabetes the RCT signal is small but real — roughly 1 to 2 kg over 3 to 6 months when paired with behavioural coaching. Stelo (Dexcom, OTC 2024) and Lingo (Abbott, US launch 2024) made CGMs mainstream, and glucose spikes in non-diabetics are mostly normal physiology, not a weight-loss failure signal.
- Weight Loss Blood Tests: The 12 Labs to Ask Your Doctor For (2026 Guide)
The core panel — HbA1c, fasting glucose, lipids, TSH, CBC, CMP, vitamin D — turns up the fixable medical reasons weight loss stalls. Here is the extended list, 2026 US cost, and when to add fasting insulin, ferritin, or a PCOS panel.