We think it could be caused by lifestyle changes that impact age at first menstruation or other factors.
Setiawan说，“我们认为可能是由生活方式的改变影响了初潮年龄引起，或者由其他原因引起的。”
For the first 21 days after menstruation, estrogen hormones create a feeling of well-being and give generally happy feelings.
大多数绝经前的女性在月经之后的21天里，体内的雌激素会产生一种健康幸福感。
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