Meredith Dietz

Meredith Dietz Senior Staff Writer

Experience

Meredith is a marathon runner and stand-up comedian. As Lifehacker’s Senior Staff Writer, she covers personal fitness tech, home gym equipment, and more.

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May 7, 2026

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Table of Contents

We’re living through a full-fledged skinny epidemic. Even if seeing celebrities get thinner and thinner doesn’t mean anything to you, notice how marketing for various weight loss products is getting increasingly ubiquitous. When I look around, the onslaught doesn’t stop with all the ads for GLP-1s. What has really caught my eye recently is how I—a fitness writer who happens to be pretty thin—keep receiving targeted ads for different types of “AI body scans.” These services take a few different forms (which I dive into below), but what they all try to sell is the same idea: Apparently, I don’t know enough about my body.…