Couples who are having issues with fertility are given an option for Assisted Reproductive Technology or ART. One of the complications of ART is multiple pregnancies. It has a higher chance of multiple fertilized eggs, one from IVF and one from natural means.
These factors can only affect the likelihood of having fraternal twins. These are twins born out of two egg and sperm cells. Identical twins can happen to anyone and doctors do not know their exact causes. Sesquizygotic twins are a relatively new concept that is still being studied further.
There is no straight answer as to how to have twins naturally like the kambal na saging that our elders warn us about. Studies show the correlation of genetics and race can increase the chances of twins. There are also ways to improve getting multiple births through fertility assistance, diet, and the like. These factors only affect the chances of fraternal twins as identical twins can happen to any mother. What is equally important is to have you and your partner checked for fertility issues as these factors will be secondary if you are unable to conceive. In addition, being in the most optimal state of health is encouraged as carrying multiples will put your body through extra stress.
Learn more about other Conception Topics here.