Protein and fiber have become prominent in grocery shopping. The rise of GLP-1 medications has led to increased focus on these nutrients, as people taking the medications are advised to prioritize muscle mass and digestion. Grocers have taken note of the trend, with Costco's chief financial officer stating that protein products are doing extremely well.

Instacart has investigated the trend, looking into shopping habits across the country. The company aimed to determine the size of the protein and fiber trend and where it is appearing in shopping habits.

Further details on the trend and Instacart's findings are available from the source.