What Causes Morning Sickness?
The exact cause of morning sickness is unknown but contributing factors are:
Hormones Morning sickness can be linked to two hormones, Human Chorionic Gonadotropin (HCG) and estrogen, which trigger the nausea and vomiting.
Increased sense of smell Pregnant women are more sensitive to smells that cause nausea
Muscle relaxation of the gastrointestinal tract The muscles of the gastrointestinal tract relax and slow digestion, making feelings of nausea more likely.
Postnasal drip During pregnancy many women experience a postnasal drip or a congested nose. This can cause a queasy stomach.
Excessive salivation Excess production of saliva can also contribute to feelings of nausea.
It is very common to experience morning sickness during the early stages of pregnancy, and the symptoms usually disappear by the second trimester (14th week). However, this differs from woman to woman and with each pregnancy. Every pregnancy is unique, and it is not unusual for a mother to find that she had no morning sickness with one child and terrible morning sickness with another.
Tags: Morning Sickness, Morning Sickness causes
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