However, the birth of twins has increased significantly alongside the rise in the use of fertility treatments and with more women choosing to have children at a later Highest possibility of twins. Doctors do not fully understand the reasons why twin pregnancies sometimes occur. Pregnancy Health Center. You're overweight. However, a twin pregnancy is riskier for both the woman and the developing fetuses. The nutrients may support hormones that help the body release Silicone g-spotter than one egg at a time.
Lighthouse uniform. Odds of Conceiving Twins Naturally or With Fertility Treatment
Monozygotic twins are genetically nearly Famous celebrities global warming and they are always the same sex unless there has been a mutation during development. Specifically, the study found that vegan mothers who exclude dairy from their diets are one-fifth as likely to have twins as vegetarian or omnivore mothers, and concluded that "Genotypes favoring elevated IGF and diets including dairy products, especially in areas where growth hormone is given to cattle, appear to enhance the chances of multiple pregnancies due to ovarian stimulation. The Independent. The Guardian. More than half of twins are born weighing less than 5. It appears that the propensity for twinning remains high among women who remain in Highest possibility of twins tribe as opposed to those have moved elsewhere and had children with non-Yoruban men. National Vital Statistics Reports. Minnesota Twins. This herbal supplement, which is called Vitex has been known for the longest time to improve fertility and balance hormones. What are your concerns?
Wondering if you might have two or more passengers aboard your mothership?
- Twins are two offspring produced by the same pregnancy.
- For some parents, the idea of having twins is exciting.
- What boosts your odds of having twins?
- If you buy something through a link on this page, we may earn a small commission.
In reality, the idea of having twins may not be so far-fetched. Birth of twins has increased some 78 percent since There are now around 34 sets of twins born per 1, births in the United States. There are some circumstances — whether naturally occurring or gained through fertility treatments — that may make you more likely to have twins. Already expecting twins? The first involves a single egg being fertilized by a single sperm.
Reproduction , right? But then, somewhere along the way, the fertilized egg divides into two, resulting in identical twins. The chances of having identical twins is relatively rare — around 3 or 4 in every 1, births. And while it may be obvious, identical twins are always the same sex, either both boys or both girls, at birth. Fraternal twins, on the other hand, result when two separate eggs are fertilized by two separate sperm cells.
Both fertilized eggs implant into the uterus and — nine months later — two babies are born. Fraternal twins can either be two boys, two girls, or a boy and girl. They may or may not look a lot like. One reason for this may be hyperovulation, which is a situation where the body releases two or more eggs during ovulation — basically a requirement for having fraternal twins. And hyperovulation can be passed down in your DNA. Are you over age 35? Hormonal changes that happen as you near menopause may encourage the body release more than one egg during ovulation.
If two or more are fertilized and both implant, you might just need two cribs in your nursery. Taller women seem to have a higher rate of having twins. This may sound a bit strange, but researchers credit a certain insulin-like growth factor with this possibility. Women who are overweight also have a higher chance of conceiving twins naturally. Specifically, the chances are highest if your body mass index BMI is above On the flip side, BMIs that are under The idea behind this theory goes back to the insulin-like growth factor and its influence on conception.
Having a BMI over 30 may also place you in the high-risk category of pregnancy, so talk to your doctor about a healthy weight for you before getting pregnant.
African American women have a slightly higher chance of conceiving twins than Caucasian women. But Asian and Hispanic women have a lower chance of having twins than other groups.
That said, Caucasian women over age 35 have the highest rate of higher order multiples, which means triplets or more. One older study says that what you eat may make twins more likely — up to five times more likely, in fact! Women who consume animal products, particularly dairy products, may be taking in extra insulin growth factor.
The cows release this hormone into their milk and — when consumed — it may influence human reproduction. Another study shows that eating lots of yams may increases the chances of having twins as well. The nutrients may support hormones that help the body release more than one egg at a time. He or she may be the reason you end up having twins. Clomiphene citrate Clomid and letrozole Femara are ovulation-stimulating medications.
Both of these drugs are often given in IUI cycles and may help the body produce multiple eggs that may release at the same time. If two or more are fertilized and implant, twins are a possibility.
In one study , the rate of twins with Clomid was 7. Femara had a lower rate of just 3. Gonadotropins, like follicle stimulating hormone FSH , stimulate the growth of egg follicles. These injectable medications are also often used in IUI and other fertility treatments, and the rate of twins while using these medications is a whopping 30 percent.
Drugs are also a part of IVF. But one of the main factors that increases your chances of twins with this reproductive technology is the number of embryos you decide to transfer. Some couples choose to transfer just one.
The more likely scenario is with regard to fraternal twins. If you transfer two or more embryos and they both successfully implant and develop, twins or more! The rate of twin pregnancies with IVF with fresh embryos is The chances decrease with age unlike natural twin conception , as women 38 to 40 only have a 5.
And for those who are 43 and older, the rate is just 0. And consider this: Some couples may choose to transfer two embryos during IVF. Say one of those embryos splits and then all three implant in the uterus. The result would be triplets — two identical twins and one fraternal sibling. For example, twins are 12 times more likely than single babies to be born early.
Not only that, but women carrying twins are also at an increased risk of developing preeclampsia and gestational diabetes. It just means you may need to be monitored a bit more closely. But experts currently recommend younger women transfer just one embryo per IVF cycle for the best outcome. Ovulation-enhancing drugs used alone or with IUI require a prescription and may carry some serious risks, like higher chance of ovarian hyperstimulation or ectopic pregnancy.
Drugs and procedures like IVF are also costly and typically reserved for couples who have been diagnosed with infertility. For women under 35, infertility means not getting pregnant with timed intercourse in the course of a year.
And for women over 35, this timeframe shortens to 6 months. They can tell you about any associated risks unique to you and if doing a multiple-embryo transfer with IVF might be an option. There are certainly both risks and rewards with twins. But before you get too carried away with dreaming, try first looking forward to seeing double… with the lines on your pregnancy test.
This can help women or…. Getting pregnant can take longer than expected. Many couples also struggle with infertility. Learn how long it typically takes to conceive after sex…. There are more types of twins than were once thought. Beyond identical and fraternal twins, there's a rare third type called half identical twins…. Learn which ones you should follow for a healthy pregnancy and baby.
Trying to get pregnant? We have some suggestions on how you can increase your chances of getting a positive result. Identical twins are the same in so many ways, but does that include having the same fingerprints? There's conflicting information out there so we look…. Collagen is an essential building block for the entire body, from skin to gut, and more. Here's five changes you may see or feel just by taking more…. You can do a lot of prep work to make the perfect sleep environment.
But if that doesn't work, here are six other hacks to try. Identifying your triggers can take some time and self-reflection. In the meantime, there are things you can try to help calm or quiet your anxiety…. If your take on meditation is that it's boring or too "new age," then read this. One man shares how - and why - he learned to meditate even though he…. Your odds may be better than you think.
Having twins naturally. Factors that increase your odds of having twins naturally. Having twins with fertility treatments. How to increase your odds. Types of Twins. Read this next. Intrauterine Insemination IUI. How to Fall Asleep in 10, 60, or Seconds. Do You Live with Anxiety? Here Are 11 Ways to Cope.
What it does increase, however, is your risk of miscarriage and gestational diabetes if your BMI crosses the threshold toward obesity. By making use of this content, you agree that ConceiveEasy and the expert assume no liability. Your identity changes, but you…. One twin, the 'donor' twin, is small and anemic , the other, the 'recipient' twin, is large and polycythemic. A second case of sesquizygotic twins was reported in Other factors that increase your chances of getting pregnant with multiples include
Highest possibility of twins. Navigation menu
As of only two cases have been reported. Both ova are then fertilized, each by a different sperm, and the coalesced zygotes undergo further cell duplications developing as a chimeric blastomere. If this blastomere then undergoes a twinning event, two embryos will be formed, with different paternal genetic information and identical maternal genetic information. This results in a set of twins with identical gene sequence from the mother's side, but different sequences from the father's side.
Cells in each fetus carry chromosomes from either sperm, resulting in chimeras. This form had been speculated until only recently being recorded in Western medicine. In , a study reported a case of a pair of living twins, which shared an identical set of maternal chromosomes, while each having a distinct set of paternal chromosomes, albeit from the same man, and thus they most likely share half of their father's genetic makeup.
The twins were both found to be chimeras. One was an intersex XX, and one a XY male. The exact mechanism of fertilization could not be determined but the study stated that it was unlikely to be a case of polar body twinning. A second case of sesquizygotic twins was reported in Mirror image twins result when a fertilized egg splits later in the embryonic stage than normal timing, around day 9— This type of twinning could exhibit characteristics with reversed asymmetry, such as opposite dominant handedness, dental structure, or even organs situs inversus.
There is no DNA-based zygosity test that can determine if twins are indeed mirror image. There have been many studies highlighting the development of language in twins compared to single-born children. These studies have converged on the notion that there is a greater rate of delay in language development in twins compared to their single-born counterparts.
Another term to describe what some people call "twin talk" is cryptophasia where a language is developed by twins that only they can understand. The increased focused communication between two twins may isolate them from the social environment surrounding them. Idioglossia has been found to be a rare occurrence and the attention of scientists has shifted away from this idea. However, there are researchers and scientists that say cryptophasia or idioglossia is not a rare phenomenon.
Current research is looking into the impacts of a richer social environment for these twins to stimulate their development of language. Twins are common in many mammal species, including cats , sheep , ferrets , giant pandas , dolphins , dogs , deer , marmosets , tamarins , and elephants. A female calf that is the twin of a bull becomes partially masculinized and is known as a freemartin. From Wikipedia, the free encyclopedia. One of two offspring produced in the same pregnancy. Use with P31 on items for one twin.
For other uses, see Twin disambiguation and Twins disambiguation. Main article: Populated places with highest incidence of multiple birth. Main article: Vanishing twin.
Main article: Conjoined twins. Main article: Chimera genetics. Main article: Parasitic twin. Main article: Twin-to-twin transfusion syndrome. Main article: Twin study. Cummings "Human Heredity Principles and issues" p.
Retrieved Independent Online. BBC World Service. Bomsel-Helmreich; W. Al Mufti In Louis G. Keith; Emile Papierik; Donald M. Keith; Barbara Luke eds. Taylor and Francis. Clues to fertility, a student discovers". Newell, Marie-Louise ed. Clinical Perinatology. Unlike singleton gestation where identification of patients at risk for PTL is often difficult, every multiple gestation is at risk for PTL, so all patients can be managed as being at risk. Go Ask Alice! Archived from the original on 17 January Retrieved 15 March Understanding Genetics.
Stanford School of Medicine. Archived from the original on 15 February China Daily. Associated Press. Retrieved 11 November The World Factbook. Central Intelligence Agency. Washington State Twin Registry. Retrieved 24 July The Guardian. Derom; J. Orlebeke; A. Eriksson; M. Thiery Keith ed. Human Reproduction Update.
Keith; Louis G. Keith; William F. Rayburn November The Journal of Reproductive Medicine. Researchers believe the laboratory culture could be the cause" Press release. European Society of Human Reproduction and Embryology. Archived from the original on Circulation Research. Journal of Medical Genetics. American Journal of Medical Genetics. Prenat Diagn.
July Entwined lives: twins and what they tell us about human behavior. New York: Dutton. Behavioral genetics. New York: Worth Pubs. Journal of Mind and Behavior. Nance; Cynthia C. Morton; Judith A.
Brown; Fay O. Redwine; Robert L. Jordan and T. Mohanakumar February Human Reproduction. Lay summary — "'Semi-identical' twins discovered" Nature News The Lancet. Archived from the original PDF on Prenatal medicine. Page Focus Information Technology.
In Robert Resnik; Robert K. Creasy; Jay D. Iams eds. Maternal-Fetal Medicine: Principles and Practice 5th ed. Philadelphia : W.
Saunders Company. J Perinatol. Effect of diet and heredity on the human twinning rate". J Reprod Med. Park National Vital Statistics Reports. National Center for Health Statistics.
Acta Genet Med Gemellol Roma. The Telegraph. The Sun. Archived from the original on 25 January BBC World News. The Independent. Archived from the original on 15 May Times of India. Retrieved 23 October Archived from the original on 4 October Business Directory Plugin.
Archived from the original on 27 April Br J Obstet Gynaecol. Retrieved on New England Journal of Medicine. Acta Obstet Gynecol Scand.
The excluded twin pregnancies were in cases of 1 delivery before 34 weeks of gestation; 2 when the first twin was delivered by caesarean section ; 3 when either of the twins had died in the womb before the onset of labor; and 4 when the pregnancy had been complicated by fetal malformations or Twin-to-twin transfusion syndrome.
Keith; Emile Papiernik; Donald M. New scientist. Royal College of Obstetricians and Gynaecologist. Retrieved 12 June Obstet Gynecol. September Developmental biology. Sunderland, Mass: Sinauer Associates. Boston: Massachusetts Medical Society. CBC News. Thomson Reuters. Retrieved 28 February Thomson Reuters Trust. Archived from the original on 28 February Early Human Development. Times Literary Supplement : Twin Research and Human Genetics.
Twin category. Twin conditions Q Twin-to-twin transfusion syndrome Twin reversed arterial perfusion Monoamniotic twins. Parasitic twin Craniopagus parasiticus Fetus in fetu.
A woman gets pregnant again while already pregnant, resulting in multiple fetuses at differing developmental stages. Chimerism , mosaicism.
Normally, twins have two separate di- being a numerical prefix for two chorions and amniotic sacs , termed Dichorionic-Diamniotic or "DiDi". This can occur more frequently in women who are considered advanced maternal age, or greater than 35 years old at pregnancy term. Uterus or cervix infections can be dangerous to a developing baby and lead to miscarriage.
Other infections that may pass to the baby or placenta can also affect a developing pregnancy and may lead to loss. This refers to defects of the uterus cavity. Clotting disorders are conditions that cause your body to form more blood clots than normal. Examples include lupus anticoagulant and antiphospholipid syndrome. In the case of pregnancy, blood clots can form in the placenta.
This prevents nutrition and oxygen from getting to the baby-to-be, and prevents waste from being carried away. The first trimester of pregnancy is considered weeks 0 to About 80 percent of miscarriages happen in the first trimester.
Losses after this time occur less often. March of Dimes reports a miscarriage rate of only 1 to 5 percent in the second trimester. These early weeks mark the highest risk of miscarriage. It may even seem like a late period. One study indicated that compared to women younger than Once a pregnancy makes it to 6 weeks and has confirmed viability with a heartbeat, the risk of having a miscarriage drops to 10 percent.
According to a study , the risk for miscarriage falls quickly with further gestational age. However, this was not specifically studied in patients with other risk factors for miscarriage. By week 12, the risk may fall to 5 percent. The most common signs of a miscarriage are bleeding and cramping that are felt in the abdomen, pelvis, or lower back. Some women have spotting light bleeding during pregnancy. But call your doctor right away if you see bright red blood, particularly in large amounts.
Cramping can also happen in normal pregnancies. The majority of miscarriages are the result of genetic abnormalities or other health factors that are beyond our control. The best thing you can do is to keep yourself as healthy as possible before trying to conceive and throughout your pregnancy. Here are some tips to staying healthy during pregnancy:. A blood sample will be taken from one or both partners, and then sent to a laboratory to be evaluated for major genetic disorders.
This testing and other evaluation are generally done after someone has recurrent losses. The experience of a miscarriage can be physically and emotionally painful. Talk to trusted friends and family, and ask for help when you need it.
Your doctor may be able to recommend a support group or therapist in your area. There are also many online organizations and support groups like March of Dimes that offer a safe place to share your story and grieve with others. Rena Goldman is a journalist and editor who lives in Los Angeles. She writes about health, wellness, interior design, small business, and the grassroots movement for campaign finance reform.
If you're experiencing changes to your dreams since your pregnancy began, you aren't alone. Learn more about what the causes may be, what types of…. Is that nausea you're feeling actually morning sickness? Learn more about when morning sickness starts, when it ends, and how to manage the symptoms…. Intermittent fasting is generally not recommended during pregnancy. We'll tell you why and explain other options.
I never expected my recovery from my fifth baby to be easier, and I'm giving the credit to exercise. Doing what you can for as long as you can really…. Crying during pregnancy isn't just perfectly normal — it's also fairly common. We'll talk about what causes it and how to know if it's something that…. The newest brand from Healthline that focuses on your life and your well-being through the lens of becoming a parent.
Your identity changes, but you…. The first few weeks after labor require lots of extra TLC, and this self-care package of products will ensure new moms are getting what they really….
How to have twins: Factors, odds, and improving your chances
Wondering if you might have two or more passengers aboard your mothership? Multiple births are, in fact, multiplying at a fantastic rate these days: The number of twin births has jumped more than 75 percent in the past 30 years; now, stats show that the there are about 33 twins born per every 1, births.
The surge in older moms has a lot to do with it, along with an increase in fertility treatments and the rise in obesity, say experts. Yet these are only a few of the factors behind twin births. Here are the overall odds of having twins, along with factors that could increase your chances. Nearly 4 percent of babies in the United States are now born in sets of two, three or more, with the majority — about 95 percent — of these multiple births being twins.
A number of factors are at play when it comes to your chances of having fraternal twins. Note that identical twins are rare and occur at random, so they're even more of an exciting surprise!
Your chances of seeing double or more go up if:. The educational health content on What To Expect is reviewed by our team of experts to be up-to-date and in line with the latest evidence-based medical information and accepted health guidelines, including the medically reviewed What to Expect books by Heidi Murkoff.
What are the chances of having twins? Your chances of seeing double or more go up if: You have twins in your family. Heredity doubles your chances of conceiving twins — but only on the mom's side. Even if your partner's family tree is loaded with dynamic duos, that won't increase your own odds of conceiving twins. You've had twins before. Lightning can and does strike twice! If you've already given birth to a set of twins, look out — you're significantly more likely to do so again.
You're an older mom-to-be. As you age, your chance of conceiving twins increases. Researchers have found that women over 35 produce more follicle stimulating hormone FSH than younger women, which may cause more than one egg to drop at ovulation.
You've been pregnant before. You're undergoing or underwent fertility treatments. You're overweight. Women with pre-pregnancy BMIs higher than 30 are significantly more likely to have fraternal twins than women with lower BMIs.
You're tall. Twins are more common in large and tall women than in small women in an often-cited study, women who gave birth to twins were on average more than an inch taller than the average female, or 5 feet 5 inches vs. You're African-American.
Black women are slightly more likely than Caucasians to have twins. If you're Asian or Hispanic, however, you're a bit less likely than Caucasians to get two-for-one. It's true! If you can check more than one of the above boxes, your odds do increase slightly. More About Multiples. What Are the Different Types of Twins? View Sources. Are you a twin? Share some insight. Anyone else use this?
There are 20, active discussions happening now in our Multiples and Twins community group. Pregnancy Groups. First Trimester. Jump to Your Week of Pregnancy. Please whitelist our site to get all the best deals and offers from our partners. Allergies During Pregnancy. Best Maternity Leggings. Follow Us On.