Those who know us know we weren't; those who don't know us have no business in knowing anything.
So if you're ever curious and feel like asking a total stranger whether or not they were on fertility drugs when they conceived twins, know this:
- Although assisted reproductive therapies (including in vitro, ovulation-inducing drugs and artificial insemination) account for 17% of all twins and 40% of all triplets born in 2007; identical twins, on the other hand, is not influenced by fertility-enhancing treatments.
- Identical twins form when a single fertilized egg divides in two separate embryos while fraternal twins occur when two eggs are independently fertilized by two different sperm cells.
- The odds of having identical twins is about 3 in 1,000, whereas the birthrate for all twins is about 32.2 in 1,000.
- The causes of identical twinning are generally unknown and unidentified. No one really knows why an egg splits.
- There's no hereditary trait that influences a predisposition to having identical twins, unlike fraternal twins.
