论文：Human Reproduction
主要内容：Could hCG levels signify whether you may be having a boy or a girl?
A: According to a recent study, women who had a female fetus had hCG levels significantly higher than women who carried a male fetus. This finding is consistent with that found by several other researchers.
In a study published by Yaron Y et al in Human Reproduction, the authors studied 1,325 pregnant women with singleton pregnancies at 10-13 weeks and compared different hormone levels including the pregnancy hormone hCG human chorionic gonadotropin between women carrying a male and a female fetus .
翻译：看图一。
论文发表权威级别：见图二、三
PS：论文只能说明胎儿性别是HCG的变量，但其他因素也能引起HCG的变化，比如孕妈年龄、营养、体重等。在其他变量保持不变的前提下，女胎确实可以导致孕妇体内HCG升高。但其他变量本身是很难保持一致的，所以参考价值是相对而言的。当HCG差距异常明显时，性别的参考力度越高，例如当孕妇8-9周HCG的峰值达到10万以下时，生男孩的概率可以达到80%，当HCG峰值在20万以上时，生女孩概率可以达到80%。这也就是为什么大部分人生男孩孕反轻，生女孩孕反大，其中HCG的数值变化大数值高就是引起孕反加剧的原因之一。
这种由HCG峰值看男女比单纯用孕囊去瞎猜的强，准确率可以大于瞎猜的50%，就是一种较为科学的娱乐方法。最后，希望大家要凑成大大的“好”字！
