Steps, calories ... blood? The wellness industry is coming for our sugar levels
Briefly

Now the personal-data trend has come for blood sugar levels. Biotech companies are marketing CGMs to people without diabetes who want to know how their bodies process foods.
How do continuous glucose monitors work? Rather than measure sugar levels in blood directly, as one might do with a finger-prick test, CGM devices measure sugar in the interstitial fluid around cells.
Read at www.theguardian.com
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