Quoting RobinJ85: Ummm its probably just as common for teenagers to get knocked up with twins as it is for an "Adult" ... [snip!] ... the hell wouldnt it be just as common.... Hmmmmm Edited to ask: Or did you just mean how common are they on BG???
actually its really not as common for teens to become pregnant or as u so eloquently stated "Knocked up" wih twins.
There are things that can increase your chances of having a multiple birth, including a mother being 30 or over when she conceives. For example, while there is a 3% chance of having a multiple birth at age 25-29, it increases to 4% at 30-34 years and almost 5% at 35-39 years.
Other factors that can increase your chances of having twins include having a maternal family history of multiple births (fraternal), and of course, using fertility treatments (in vitro fertilization or fertility drugs).
Your chance of having twins is also influenced by your race (multiples are more common in African Americans and least common in Hispanics and Asians), how many times you have been pregnant (the chance of having twins increases with each pregnancy), and whether or not you have had twins already.