There is no guaranteed natural way to make a twin pregnancy
Twin pregnancies can happen naturally by chance
Fertility treatments can increase the chance of twins
Ovulation-inducing medications may raise the chance of releasing more than one egg
In vitro fertilization can increase the chance of twins depending on how many embryos are transferred
A family history of fraternal twins may increase the chance of twins
Being older than 30, especially in the late 30s, may slightly increase the chance of twins
Having had previous pregnancies may slightly increase the chance of twins
Certain ethnic backgrounds have higher twin rates than others
Higher body weight and taller height have been associated with a higher chance of fraternal twins
Discuss fertility options and risks with a doctor before trying to increase the chance of twins