Children of women who have mother that encountered nausea and vomiting or morning sickness during pregnancy, three times greater risk to experience it too. According to a study done by Norwegian researchers.
Morning sickness, also called nausea gravidarum, nausea, vomiting of pregnancy (emesis gravidarum or NVP), or pregnancy sickness is a condition that affects more than half of all pregnant women, as well as some women who use hormonal contraception or hormone replacement therapy.
Usually, it is present in the early hours of the morning and reduces as the day progresses. The nausea can be mild or induce actual vomiting. In extreme cases, vomiting may be severe enough to cause dehydration, weight loss, alkalosis and hypokalemia. This extreme condition is known as hyperemesis gravidarum and occurs in about 1% of all pregnancies.
Symptoms of morning sickness usually occurs around the 6th week of pregnancy until 22 weeks of fetal age. In some cases, nausea and vomiting can be severe and disrupt the pregnancy process. This condition can cause low birth weight and premature birth.
A study conducted a number of researchers from the Norwegian Institute of Public Health, Oslo, found a link between morning sickness with heredity. For the purposes of this study, researchers collected data from 2.3 million births between 1967 until 2006. They track the incidence of hyperemesis gravidarum (excessive nausea and vomiting) in more than 500 000 mothers and 400 000 girls and mothers and wives of their sons.
Note that when the mother is experiencing such conditions, her daughter is also three times greater risk of going through it. Meanwhile, the smaller the risk of mother-in-law who suffered from nausea and vomiting of pregnancy.
“Hyperemesis gravidarum is a serious condition and could threaten the health of mother and fetus. By knowing the risk factors and appropriate treatment, health risks can be minimized,” said Brad Imler, president of the American Pregnancy Association.
He added that hyperemesis gravidarum occurs in 1 in 100 or three of the 100 pregnancies. Genetic factors, or descent is also suspected to cause this condition. “These results add evidence that heredity is influential,” he said.
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