I was in Erewhon and I couldn’t keep my mouth shut

I was in Los Angeles last week visiting one of my daughters, and she took me to Erewhon. (Happily, for the record.)If you’ve never been, Erewhon is the grocery store where a smoothie costs $22 and the parking lot looks like a Tesla dealership. When in Rome, right?So, of course, I end up in the toothpaste aisle, and what I saw was pretty exciting. Nano-hydroxyapatite was everywhere. Brand after brand, all featuring nHAP—the calcium mineral that makes up 97% of your enamel.Ten years ago, you couldn’t find this stuff outside of Japan. Now it dominates the toothpaste aisle at the most talked-about...

23 hours ago

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