GuideTech & Gadgets
Continuous Glucose Monitors Without Diabetes: How Useful Are They?
Glucose monitors are now sold over the counter. What research says about wearing one if you do not have diabetes, and what to watch for.
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Tech & Gadgets
Wearables, apps, smart scales and the gear worth your attention.
GuideTech & Gadgets
How Accurate Is the “Calories Burned” Number on Your Fitness Tracker?
Wrist trackers are good at heart rate and much weaker at counting calories burned. Here is what the research found, and how to use the number.
GuideTech & Gadgets
Sleep Trackers: How Much Can They Really Tell You?
Your watch or ring gives you a sleep score every morning. How close is it to what a sleep lab would measure?
GuideTech & Gadgets
Calorie-Tracking Apps: How Accurate Are They?
Reviews of validation studies find calorie apps tend to under-record what we eat. Here is how far off they can be and how to use them well anyway.
GuideTech & Gadgets
Smart Scales and Body-Fat Readings: How Much to Trust Them
Smart scales estimate body fat with a tiny electrical current. Here is how that works, why readings wander, and how to use the trend wisely.
GuideTech & Gadgets
Smart Rings and Wearables: How Much Can They Tell You?
Wearables are the top fitness trend, but how accurate are they? What research says about steps, heart rate and calories, and how to use one wisely.