While many people think this is a myth, several studies have found that 53-56% of women with severe morning sickness (hyperemesis gravidarum) have a girl. Researchers believe that the hormone which causes morning sickness is hCG and at least one study has indicated that women carrying girls have higher hCG levels than those pregnant with boys.
Learn about the risks and treatment options for severe morning sickness.
Learn about having morning nausea when you're not pregnant.
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