US girls got their first periods increasingly earlier over the last 50 years, new study finds
- Young women in the United States are experiencing earlier periods and irregular menstruation, raising health concerns.
- Researchers are investigating environmental factors like high-sugar diets or stress that may contribute to the trend of earlier periods.
- A study in JAMA Network Open analyzed data from 71,000 American females born between 1950 and 2005, exploring factors like menstrual cycles and BMI.
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Total News Sources0
Leaning Left5Leaning Right1Center3Last UpdatedBias Distribution56% Left
Bias Distribution
- 56% of the sources lean Left
L 56%
C 33%
11%
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