Briefly, the exact cause is unknown. Causes may include hormonal changes (possibly progesterone, estrogen or hCG levels), the rapid stretching of the uterine muscles, swings in blood sugar, etc.
2007-03-27 13:04:44
·
answer #1
·
answered by tribeca_belle 7
·
0⤊
1⤋
Adjusting hormones.
Some possible causes include:
• Rapidly rising levels of the hormone human chorionic gonadotropin (hCG) during early pregnancy. No one knows how hCG contributes to nausea, but the timing is right: Nausea tends to peak around the same time as levels of hCG.
Estrogen, another hormone that rises rapidly in early pregnancy, is also considered a prime suspect, and it's possible that other hormones play a role as well.
• An enhanced sense of smell and sensitivity to odors. It's not uncommon for a newly pregnant woman to feel overwhelmed by the smell of a bologna sandwich from four cubicles away, for example, and that certain aromas instantly trigger her gag reflex. This may be a result of higher levels of estrogen.
• A tricky stomach. Some women's gastrointestinal tracts are simply more sensitive to the changes of early pregnancy.
You may have heard that morning sickness can be caused by a vitamin B deficiency. While taking a vitamin B6 supplement does seem to help ease nausea in many pregnant women, this doesn't mean they have a vitamin deficiency. In fact, at least one study has shown no significant differences in the levels of B6 in women with morning sickness and those without.
No one knows why B6 is helpful. There's also some evidence that taking a multivitamin at the time of conception and in early pregnancy helps prevent severe morning sickness, but again, no one knows why.
Some researchers have proposed that certain women are psychologically predisposed to having nausea and vomiting during pregnancy as an abnormal response to stress. However, there's no good evidence to support this theory. (Of course, if you're constantly nauseated or vomiting a lot, you certainly may begin to feel more stressed!)
2007-03-27 20:21:23
·
answer #2
·
answered by its me 3
·
0⤊
0⤋
Its just because the body is experiencing a surge of hormones that it's not used to. This usually passes after the first three months and only fifty percent of women actually experience morning sickness.
2007-03-27 22:52:18
·
answer #3
·
answered by Laura B 2
·
0⤊
0⤋
My Ob said that the female body has estrogen receivers in the lining of the stomach, the intestines and the nasal cavities. The increased levels of estrogen settle into these areas and can cause vomiting, diarrhea and nose bleeds! All common discomfort associated with pregnancy!
By the second trimester, your estrogen levels begin to level out and some of those symptoms are relieved :)
2007-03-27 20:26:13
·
answer #4
·
answered by western b 5
·
0⤊
0⤋
WIKIPEDIA CAN BE YOUR FRIEND!
There is insufficient evidence to pin down a single (or multiple) cause, but the leading theories for proximate causes include:
* An increase in the circulating level of the hormone estrogen. Estrogen levels may increase by up to a hundredfold during pregnancy.
* Low blood sugar during pregnancy.
* An increase in progesterone relaxes the muscles in the uterus, which prevents early childbirth, but may also relax the stomach and intestines, leading to excess stomach acids.
* An increase in human chorionic gonadotropin.
* An increase in sensitivity to odors, which overstimulates normal nausea triggers.
As for root causes, this issue is still somewhat controversial. A notable current scientific hypothesis is that morning sickness exists as a safeguard for the embryo's health. Biologists Gillian V. Pepper and S. Craig Roberts have done a study that indicates that the intake of alcohol, sugar, oils, and meat can trigger morning sickness. This then acts as a way of discouraging ingestion of less healthy foods.[1] According to Margie Profet, eating vegetables may be a factor as well.[2] Vegetables produce a small amount of toxins to deter insect infestation and while these toxins are normally harmless to adult humans, they are potentially dangerous to embryos.[3] Additionally, morning sickness begins at the point when the embryo's organ systems are being laid down and the embryo is most vulnerable to birth-defect inducing chemicals, but is growing slowly and has only a modest need for nutrients. By the 14th-16th week, when morning sickness typically wanes, the organ systems of the embryo are mostly complete and the most prominent need is now nutrients. Women afflicted by morning sickness typically avoid "bitter, pungent, highly-flavored, and novel foods," foods which are likely to contain toxins. Foraging people are at an unusually high risk of ingesting plant toxins, due to wild plants being a substantially larger part of their diet than civilized people's. Thus, morning sickness offers an evolutionary advantage, as studies have shown that women with more severe morning sickness have less chance to miscarry as well as less chance to have children with birth defects (see below), which explains its prevalence among most women and why it is a universal phenomenon across the human race.
Many other non-scientific theories for morning sickness have been proposed in the past. Notably, according to psychologist Sigmund Freud, morning sickness is the result of the mother's loathing of her husband. The subconscious manifestation of this is a desire to abort the fetus through vomiting.[3] In general, such theories are not accepted by modern scientists.
2007-03-27 19:58:31
·
answer #5
·
answered by iampatsajak 7
·
0⤊
1⤋
think about it....if a live human were growing and developing and moving around, floating in a fluid sac in your body...wouldn't u throw up too? it is actually alive and living inside you...it puts stress on your body. plus you get a huge hormone surge to accomodate the presence of the baby and it can make you sick. after three months or so, your body if you are lucky, just gets used to it and you stop throwing up.
2007-03-27 19:59:11
·
answer #6
·
answered by Anonymous
·
0⤊
2⤋
Not all women get sick, But if they do it is because of hormones that come with pregnancy.
2007-03-27 19:58:21
·
answer #7
·
answered by chenelle o 2
·
2⤊
1⤋
I never got sick when I was pregnant.
2007-03-27 20:03:04
·
answer #8
·
answered by Patience 6
·
0⤊
0⤋
I dont know I guess cus a baby Is forming in her stomach
2007-03-27 19:57:56
·
answer #9
·
answered by beautiful 2
·
0⤊
3⤋
because the hormones are skyrocketing.
2007-03-27 19:59:04
·
answer #10
·
answered by Laurellamags 5
·
0⤊
1⤋