Medical experts say the likelihood of having twins can be influenced by several biological, genetic, and medical factors. Twins occur when either one fertilized egg splits into two identical embryos or when two separate eggs are fertilized during the same pregnancy, resulting in fraternal twins.
According to reproductive health specialists, one factor linked to a higher chance of twins is maternal age. Women in their 30s, particularly those over 35, may have a slightly increased likelihood of conceiving fraternal twins because hormonal changes can cause the ovaries to release more than one egg during ovulation.
Body size and nutrition have also been discussed in scientific studies. Some research suggests that taller or heavier women may have a slightly higher chance of multiple pregnancies, although experts say the exact reasons are not fully understood. Nutrition and overall reproductive health are believed to play a role.
Family history is another important factor, especially in cases involving fraternal twins. Doctors explain that a family history of fraternal twins on the mother’s side may increase the chances of releasing multiple eggs during ovulation. However, genetics does not appear to significantly influence identical twins in the same way.
Health professionals also note that fertility treatments have contributed to rising twin birth rates in many countries. Fertility medications and assisted reproductive technologies such as in vitro fertilization (IVF) can stimulate the release of multiple eggs or involve transferring more than one embryo, increasing the likelihood of twins or other multiple pregnancies.
Certain studies have also examined whether supplements such as folic acid may influence twin pregnancies, although evidence remains limited. Doctors continue to recommend folic acid primarily for supporting healthy fetal development and reducing the risk of birth defects rather than specifically increasing the chances of twins.
Despite public fascination with twin pregnancies, medical professionals caution that carrying twins can involve higher health risks compared to single pregnancies. These risks may include premature birth, gestational diabetes, high blood pressure, and complications during delivery.
Doctors encourage women planning pregnancies to seek proper prenatal care and consult healthcare professionals regarding fertility treatments, supplements, and reproductive health decisions.
Experts continue to emphasize that while some factors may slightly increase the likelihood of twins, many twin pregnancies still occur naturally and unpredictably.
