Most twins were born in recent years, with record numbers occurring from the late 1990s through the 2000s, peaking around 2006-2009 in the U.S., driven by factors like delayed childbearing and fertility treatments (IVF), though global rates might have peaked around 2010-2015 before shifting towards single embryo transfers.
In fact, studies have shown that women in their late 30s and early 40s are more likely to release multiple eggs in one cycle, which increases the chances of conceiving twins. The body's tendency to release more eggs is one of the reasons why older women have a higher rate of twin pregnancies.
Over the past decade, multiple birth numbers have remained relatively consistent in Australia. In 2023, 4,118 sets of multiples were born, representing 1.5% of all births (286,998) in Australia. Of these, 4,073 were twins and 45 were triplets or higher order multiples (or 99% were twins and 1% triplets or HOMs).
So the question of going past 38 weeks on day six of that week (6/7) doesn't come up that often! But for those who do get there, the best data available suggests that at 38 to 39 weeks, the risk of stillbirth for twins seems to be higher than the risk of neonatal death after delivery.
A little more than half of twin pregnancies end in preterm delivery (before 37 weeks). While 40 weeks is the full gestation period of the average pregnancy, most twin pregnancies are delivered at approximately 36 weeks (range 32-38 weeks depending on the type of twin pregnancy).
A daisy baby is another name for babies with TTTS. The Twin-to-Twin Transfusion Syndrome Foundation coined the term after its founder planted daisy seeds with her surviving twin son in their backyard. The daisy field is a symbol of hope that all babies affected by TTTS will survive.
The rarest birthdays in Australia are February 29 (Leap Day), followed by public holidays like Christmas Day (Dec 25), Boxing Day (Dec 26), New Year's Day (Jan 1), and Australia Day (Jan 26), with December being the least common month overall for births, as obstetricians often avoid scheduling non-emergency C-sections or inductions on holidays.
Age: Women 35+ are more likely to release more than one egg in a cycle. History of twins: If you've had fraternal twins before, your chances of having another set are higher. Pregnancy history: The more pregnancies you've had, the higher your odds of twins.
Australia's top three causes of death consistently include Dementia (including Alzheimer's disease), Ischaemic Heart Disease, and Chronic Lower Respiratory Diseases (like COPD), though their exact ranking can shift, with dementia often leading for women and heart disease for men, but the overall gap narrowing significantly, according to recent ABS data.
Across many nations, the rarest birthdays often fall on major holidays, when fewer births— especially planned ones-are scheduled. Dates like December 25 (Christmas Day), January 1 (New Year's Day), and December 24 consistently rank among the least common.
The gene for hyperovulation can come from either side of the family, but the woman would need to have the gene in order for the couple to have twins based on genetics. In other words, twins on the father's side of the family will have no influence on your chances of having twins.
While both fraternal and identical twins outperformed their non-twin counterparts, identical twins showed even greater gains in life expectancy over fraternal twins, leading scientists to theorize that identical twins perhaps form deeper bonds due to an enhanced ability to predict their sibling's needs.
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A Gold Coast woman has become what is believed to be Australia's oldest natural first-time mother, giving birth at 50. Anthea Nicholas and her husband Paul Byrnes, 54, had a "one in several million" chance of falling pregnant, Ms Nicholas' doctor told the Australian Women's Weekly.
Two Japanese sisters have been certified by Guinness World Records as the world's oldest living identical twins at over 107 years and 300 days. Umeno Sumiyama and Koume Kodama have broken the record set by late Japanese twin sisters Kin Narita and Gin Kanie.
However, males are also more susceptible than females to die in utero, and since the death rate in utero is higher for twins, it leads to female twins being more common than male twins.
You may experience more nausea or fatigue and notice some additional symptoms that singleton pregnancies don't typically present. According to the American Pregnancy Association, these other symptoms may be indicators of twins: More than one heartbeat detected by a Doppler. Increased hCG levels in the body.
No, Australia is not 90% white; while a large majority identify with European ancestry (around 76-80% in recent years), a significant and growing portion identifies as Asian, African, Middle Eastern, or Indigenous, making it a highly multicultural nation with diverse ethnic backgrounds, not overwhelmingly white. Recent census data shows European ancestry (English, Irish, etc.) makes up a large chunk, but Asian ancestries are also substantial, with over 17% Asian population and around 3.8% identifying as Aboriginal or Torres Strait Islander, per the 2021 census data from Wikipedia.
February is the least common birth month in the United States, in part because it is the shortest month of the year, with only 28 days or 29 during a leap year.
Between 2019 and 2023 the mean maternal age for women who gave birth in NSW rose from 31.0 to 31.4 years. The mean maternal age for mothers who gave birth for the first time rose from 29.6 in 2019 to 30.1 years in 2023.
Heteropaternal superfecundation is an extremely rare phenomenon that occurs when a second ova released during the same menstrual cycle is additionally fertilized by the sperm cells of a different man in separate sexual intercourse taking place within a short period of time from the first one 1-4.
Monoamniotic twins are identical twins that share an amniotic sac, the fluid-filled sac that holds the baby during pregnancy (also known as the “bag of waters”). Normally, identical twins each have their own amniotic sac. Monoamniotic twins are a rare type of “monochorionic” twins, meaning they also share a placenta.
Potential health complications in a twin pregnancy
Women with twin pregnancies are more likely to have pregnancy health problems and complications like gestational diabetes, pre-eclampsia, premature labour and bleeding. Twins who share a placenta might have extra complications.