“The precise course of pregnancy sickness is unknown, but this research shows that it occurs at a specific developmental stage, in a specific time slot. For researchers it narrows our focus in terms of where we look for the cause.”
is certainly one of the less fun aspects of pregnancy, especially since, unlike the name implies, it can strike at any time. But, while it’s a really common aspect of pregnancy, experts aren’t entirely sure what causes it. They believe it likely is related to a rush of hormones, including
, looked at data, collected at the Clearblue Innovation Centre, from the daily symptom diaries of 256 pregnant women. They compared when the nausea started for each and their vomiting symptoms to the date of their last menstrual period, which is more commonly used to measure the start of pregnancy, and the date of ovulation, which is thought to be a more accurate starting point and determined by a urine test.
"The precise course of pregnancy sickness is unknown, but this research shows that it occurs at a specific developmental stage, in a specific time slot. For researchers it narrows our focus in terms of where we look for the cause.
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