美国消费者因食品包装上的日期标签而大量丢弃仍可食用的食物。根据约翰·霍普金斯大学公共卫生学院2019年的研究，超过80%的美国消费者至少偶尔会丢弃接近包装日期标签的食物1。食品安全专家唐纳德·沙夫纳指出，"日期标签保证的是产品的质量，而不是产品的安全性"1。
目前美国在食品日期标签的使用上缺乏统一标准，全国使用超过50种不同的食品日期标签1。联邦政府唯一法律规定的过期日期产品是婴幼儿配方奶粉1。为了解决这一问题，加州于7月1日生效的新法律要求制造商使用两个标准化标签："Best If Used By"（最佳食用期）用于反映产品质量，以及"Use By"（使用期限）用于食品安全1。纽约州议员也最近通过了类似措施，正在等待州长凯西·霍楚尔的签署1。
More than 80 percent of American consumers discard food approaching its package date label at least occasionally, according to a 2019 study from Johns Hopkins School of Public Health.1 Food safety experts argue this widespread practice constitutes significant waste, as these labels primarily indicate product freshness rather than safety.1 The federal government mandates expiration dating only for infant formula, leaving the broader food industry to use over 50 different types of date labeling systems.1
California has become the first state to address the confusion by implementing standardized labeling requirements that took effect on July 1.1 The new law requires manufacturers to use two clearly defined labels: "Best If Used By" to indicate quality and optimal flavor, and "Use By" to signal the point at which food may pose a safety risk.1 New York lawmakers have passed similar legislation awaiting Governor Kathy Hochul's signature.1 Food safety expert Donald Schaffner underscores the distinction, noting that "date labels guarantee product quality, not product safety."1
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