IVF Patients: In good prognosis patients under 35 years old with good quality embryos , we transfer just one embryo and freeze cryopreserve the remaining embryos.
The final decision on how many to transfer will be discussed with your doctor but the success rate of transferring just one at a time is not much different than transferring two or more. Additionally, preimplantation genetic testing of embryos for chromosomal abnormality can help your infertility team select embryos more likely to be viable and lead to a pregnancy.
Talk to your doctor today about what is best for you or contact us to get started. Like Us on Facebook. Clomiphene and gonadotropins are commonly used fertility drugs that can increase your chances of having twins.
Clomiphene is a medication available only through prescription. In the United States, the brand names for the drug are Clomid and Serophene. Gonadotropins describe a type of fertility medication given by injection. Both hormones are made naturally by the brain and tell the ovaries to produce one egg each month. Because the body is making more eggs, there is a higher chance that more than one will become fertilized. The American Society for Reproductive Medicine estimates that up to 30 percent of pregnancies that occur while using gonadotropins result in twins or multiples.
Both of these drugs are generally considered safe and effective. But like any medication, there are potential risks and side effects that go along with using fertility drugs. If both you and your partner have a history of multiples in the family, your chances of conceiving twins is higher. This is especially true for women who have fraternal twins in their family. According to The American Society for Reproductive Medicine , women who are fraternal twins themselves have a 1 in 60 chance of having their own twins.
Men who are fraternal twins have a 1 in chance of fathering twins. Some research has shown that differences in ethnic background can impact your chances of having twins.
For example, black and non-Hispanic white women are more likely to have twins than Hispanic women. Nigerian women have the highest rate of twin births, while Japanese women have the lowest.
Women who are over age 30 — especially women in their late 30s — have a greater chance of having twins. Mothers between ages 35 and 40 who already have given birth have an even higher chance of conceiving twins. Fraternal twins are more common in women who are larger. Folic acid is a B vitamin. Many doctors recommend taking it before and during pregnancy to reduce the risk for neural tube defects like spina bifida. Prior to becoming pregnant, doctors recommend taking about micrograms of folic acid per day and increasing this amount to micrograms during pregnancy.
Ancestry If you meet 30 people of European ancestry, one of them is likely to have a twin brother or sister.
On the other hand, you have the lowest chance of meeting a twin in Asia, where 1 in 70 people is a member of a twin pair. And you have the highest chance to meet a twin in Nigeria, where 1 in 12 people has a twin sister or brother! Previous birth Your chance of having twins also increases if you have had a child before!
In vitro fertilization Over the past few years, there has been a significant increase in the use of assisted reproduction treatments. Fertility treatments such as in vitro fertilization IVF , intra-uterine insemination IUI and ovulation induction OI are one of the main causes of the steep increase in twin birth. The takeaway: The likelihood of conceiving twins is a complex trait.
There is no way to predict precisely if you will or will not have twins. And there is nothing that you can do to ensure a twin pregnancy. By Marina Sumarroca, Stanford University. WA state twin registry: Twins run in my family. Do I have an increased chance of having twins? GHR: Is the probability of having twins determined by genetics? NHS: Do twins run in families? Below are a few that are especially relevant to this article:. The Tech Interactive S.
Market St. San Jose, CA The Tech is a registered c 3. Federal ID Its content is solely the responsibility of the authors and does not necessarily represent the official views of Stanford University or the Department of Genetics.
The Tech Interactive. Back to. Image credit: CDC As of , there are on average around 16 sets of twins born per 1, births in the United States. There are two types of twins Identical twins Identical twins come from a single egg that was fertilized by a single sperm, which then divided into two separate embryos very early in the pregnancy.
They are no more related than regular siblings!
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