America's chicken got 4 times bigger since 1957, and researchers say it wasn't hormones
- Posted on September 6, 2026
- By Bing News
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- 1 min read
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America's chicken got 4 times bigger since 1957, and researchers say it wasn't hormones
At 56 days, the older birds averaged 2.0 pounds, compared with 9.3 pounds for the modern line.
