One study from found that those carrying a female fetus or twins were more likely to experience nausea and vomiting during pregnancy than those carrying a single, male fetus. However, the researchers noted that other factors, including the age of the mother, whether she smoked, and her BMI prepregnancy also affected chances.
Miscarriage is a very real concern for many women and their partners. Anything that indicates a pregnancy is not proceeding as expected can set off warning bells. Since morning sickness is such a common pregnancy symptom in the first trimester, not feeling ill might raise some red flags for you. So should we praise nausea and vomiting as signs of a healthy pregnancy? There is some research to indicate nausea and vomiting may indicate a reduced risk of pregnancy loss.
In order to get a better picture of how nausea and vomiting may be related to miscarriage, researchers in a study relied on hCG confirmed pregnancies think positive urine tests instead of ultrasound confirmed pregnancies.
This allowed researchers to begin testing for miscarriages earlier and identify more miscarriages. No study is perfect, and this study was fairly homogenous making it difficult to generalize the results. All the same, this study represents a large step forward in morning sickness and miscarriage research. The study found that for women who had experienced miscarriage once or twice before, morning sickness was very common during the first trimester and related to a reduced chance of losing the pregnancy by 50 to 75 percent.
There are many theories about why nausea and vomiting in pregnancy are connected to a reduces miscarriage risk. One theory is that it is part of an evolutionary advantage to encourage eating carbohydrate rich foods and to rid the body of any potential toxins that may be harmful to the baby. More research will need to be done on all these theories in the future as many questions still remain.
That means there are still many healthy pregnancies that occur with no morning sickness whatsoever. But before allowing nightmare pregnancy scenarios to start filling your mind, consider taking a deep breath and pausing for a minute to think about other pregnancy symptoms you might be feeling.
Believe it or not, it can actually be calming to think about all the other ways this pregnancy has you hurting! Remember also that every pregnancy is different when it comes to morning sickness. Many factors including your hormones, level of rest, and diet can all play a role in how nauseous you feel.
They can offer you an exam, guidance, or even just some reassurance that you and your baby are doing just fine. If you do suffer a miscarriage during your pregnancy, there are support groups and therapists available online and locally who can help you process your emotions. Will it ever end? Morning sickness typically lasts from weeks 6 through 12, with the peak between 8 and 10 weeks.
According to a frequently cited study , 50 percent of women wrapped up this nasty phase completely by 14 weeks into the pregnancy, or right around the time they enter the second trimester.
This same study found that 90 percent of women have resolved morning sickness by 22 weeks. While those weeks can seem brutally long, there can be strange comfort in the fact that it means hormones are doing their work, and baby is thriving.
In fact, a study found that women who had at least one prior pregnancy loss and had nausea and vomiting during week 8 had a 50 percent lower chance of miscarriage. Some people are sick all day, while others struggle in the afternoon or evening. The term morning sickness comes from the fact that you might wake up queasier than usual after going the whole night without eating. But just 1. Some medical professionals have started to refer to the group of symptoms as NVP, or nausea and vomiting during pregnancy.
If you have morning sickness further into your pregnancy than the typical time period, or if you have severe vomiting, contact your doctor. A condition called hyperemesis gravidarum occurs in. It involves severe and persistent vomiting that can lead to hospitalization for dehydration. Most of these rare cases resolve before the week mark, but 22 percent of them persist until the end of the pregnancy. Other risk factors include:. This theory is further supported by the idea that people who are having twins or higher-order multiples often experience more severe morning sickness.
But notably, hCG levels peak toward the end of the first trimester and then level off — and even decline. This is yet another piece of evidence for the hCG theory, which may be responsible for those food aversions, too.
However, if you do not have morning sickness, that doesn't mean it's a cause for concern. Just as research has not found that having morning sickness is a sign of a healthy pregnancy, not having morning sickness doesn't necessarily mean there is something wrong with your pregnancy. Here's what is known about morning sickness, pregnancy, and miscarriage risk, as well as when you should talk to your healthcare provider about your symptoms.
Experiencing nausea and vomiting in the first three to four months of pregnancy is often referred to as having "morning sickness"—despite the fact that it can happen at any time of day, not just in the morning. Morning sickness usually resolves on its own in a few months. However, it is still normal for morning sickness to occur at any point during pregnancy. While the symptoms can be uncomfortable and disruptive, they generally do not pose a risk to a pregnant person or the fetus.
Of the people who do experience symptoms of morning sickness, most report that the symptoms resolve by week 22 of pregnancy. Severe morning sickness is known as hyperemesis gravidarum. A person with hyperemesis gravidarum experiences severe vomiting on a daily basis, which leads to dehydration and weight loss. About one-third of pregnant people in Western society do not report any symptoms associated with morning sickness. In several non-Western societies, morning sickness is less common—in some places, morning sickness has never been documented.
In at least seven traditional societies, there is a known lack of morning sickness in pregnant people. While the research is not definitive, it's been theorized that the plant-based, whole-food diets these cultures follow might contribute to their lower rates of morning sickness.
Fluctuations in pregnancy symptoms are normal and there can be a wide variation between pregnant people. While it can be hard not to worry and you do want to pay attention to how you are feeling, try not to overanalyze your pregnancy symptoms.
A lack of morning sickness is not a symptom of miscarriage or a sign of increased risk. However, if morning sickness and other symptoms of pregnancy suddenly go away, this could be a sign of pregnancy loss.
Several factors are believed to contribute to morning sickness, including the hormonal changes of pregnancy and genetics. While many pregnant people have morning sickness, there are also people who do not experience any nausea and have completely healthy pregnancies. The possible causes of morning sickness symptoms that have been the most well-studied are biological factors such as levels of pregnancy-specific hormones beta hCG , estrogen, and progesterone and genetic influences.
During the first trimester of pregnancy when morning sickness symptoms tend to be worst , several major hormonal shifts take place. Pregnant people who have higher levels of hCG such as those carrying multiples or a female fetus often have worse symptoms of morning sickness. For example, a study in Japan in found that pregnant people who were carrying a female fetus had more severe morning sickness than people carrying a male fetus. However, the link is not definitive, and several other studies have found no association between the severity and duration of morning sickness symptoms and hormone levels.
Your genetics likely also plays a role in whether you'll experience morning sickness. Research has shown that the tendency for nausea and vomiting during pregnancy seems to run in families. If you've experienced morning sickness, you might wonder if there is a reason for all the discomfort. While the exact purpose of morning sickness is unknown, there are several proposed theories.
For example, it's been suggested that nausea and vomiting in early pregnancy could be an evolutionary "trick" to ensure a pregnant person is paying enough attention to their diet and nutrition.
Another theory is that vomiting, in particular, might be a safeguard against toxic substances that could harm a pregnant person or fetus. As mentioned previously, your diet might be a protective factor. If you are pregnant and do not have any symptoms of morning sickness, consider whether what you eat could partially explain your lack of symptoms.
If you have morning sickness, you might find that making some changes to your diet can help ease or prevent symptoms. Dietary changes you might want to try include:. If your morning sickness is severe or gets worse and you are losing weight, your provider might give you a prescription anti-nausea medication such as Zofran ondansetron or Unisom doxylamine succinate. They might also recommend that you try a newer anti-nausea drug Diclegis and Bonjesta that is combined with vitamin B6 and doxylamine succinate.
Morning sickness is more common than not, but if you don't develop the symptoms, it does not necessarily mean you need to be concerned. It's not a definitive sign that something is wrong with your pregnancy. A bigger concern related to morning sickness is at the other end of the spectrum—severe symptoms.
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