In 1990, the U.S. Dietary Guidelines added a recommendation that less than 30% of total caloric intake should come from fat.
Sources
- Rethinking Dietary Guidelines - PMC (pmc.ncbi.nlm.nih.gov)
- https://www.usda.gov/media/blog/2011/06/15/brief-history-usda-food-guides (usda.gov)
- https://health.gov/sites/default/files/2019-09/1990.pdf (health.gov)
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