Added protein really seems to be in all the food lately. Reporter Chris Gayomali says to thank environmental regulations, GLP-1s, and Arnold Schwarzenegger for our modern protein boom.

This episode was produced by Gabrielle Berbey, edited by Amina Al-Sadi, fact-checked by Laura Bullard, engineered by Andrea Kristinsdottir and Matthew Billy, and hosted by Noel King.

Transcript at vox.com/today-explained-podcast

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Protein bars on display at a CVS pharmacy in Queens, New York. Photo by Lindsey Nicholson/UCG/Universal Images Group via Getty Images.

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