Over the past century, the onset of puberty has been coming at an earlier age. This is referred to as the

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The term used to describe the onset of puberty occurring at an earlier age over time is the secular trend. Cross-sectional trend refers to comparing individuals of different ages at the same point in time, endocrine trend is not a recognized term, and menarche trend specifically refers to the age at which girls experience their first menstrual period.

Over the Past Century, the Onset of Puberty Has Been