Having a family history of twins will increase your chances of having twins. This is true if you have a family history of twins, meaning someone on your mother’s side or father’s side of the family has had twins, especially if they had fraternal twins. read more
Having identical twins in the family does not increase your chances of having twins. The odds for identical twins remain the same for everybody, regardless of family history or any other factors. Only a family history of fraternal twins on the maternal side will increase odds of fraternal twins. read more
Being older rather than younger helps. It seems to be a twist of nature that just before a woman enters peri-menopause, her ovaries start releasing more than one egg each month. read more
Having twins "in the family," particularly on the mother's side. If you already have twins, your chance increases at least 4x. Being of African descent makes the highest chance of having twins, followed by European descent. Hispanic and Asian people have the lowest chance of having twins. Being tall and/or well nourished or even overweight. read more