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Video:How to Have Twins

with Nick Jaynes

Want to learn about ways to increase your chances of having twins? Here, see helpful information before you start trying.See Transcript

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Transcript:How to Have Twins

Hi I'm Nick Jaynes for About.com and this is the top-five ways to have twins. I'll be using information found on About.com's multiples guide site.

Ways to Have Twins

5. Diet: Yams & Dairy: No one is quite sure why, but the Yoruba tribe in West Africa has the highest rate of twinning in the world. A study concluded that the mother's diet was the cause, being high in cassava, a type of yam or sweet potato. The peelings of this vegetable are thought to contain a chemical that causes hyperovulation. In addition, a 2006 study found that women who consume dairy are five times as likely to have twins.

4. Have More Twins: Once you have had a multiple pregnancy, you are significantly more likely to conceive -- and deliver -- twins again! Some estimates suggest that mothers of twins are four times more likely to have twins again than a woman who has never been pregnant, or who only had a singleton.

Additional Ways to Have Twins

3. Grow Up: Wait Until You're Older: Older mothers are more likely to conceive twins than their younger counterparts. It's thought that the body accelerates ovulation as the biological clock starts ticking faster. Seventeen percent of mothers over age 45 have multiples. Wait five more years and the odds rise to one in nine! However, the risks also increase; older mothers have a higher rate of miscarriage and are more likely to experience problems such as gestational diabetes during their pregnancy; in addition, their babies are at higher risk for chromosomal abnormalities.

2. Grow or Gain Weight: A study published by the American College of Obstetrics and Gynecology correlates the rise in multiple birth rates with rising rates of obesity. Research found that mothers with a BMI (Body Mass Index) of 30 or higer were significantly more likely to have twins. Again, this statistic only holds true for fraternal (dizygotic) twins. The research also showed that women of above-average height were also more likely to have multiples.

1. Have a History: Do twins run in your family? If you have a mother, brother, sister, uncle or long lost cousin with multiples, you may wonder if you'll have them too. Sometimes twinning is hereditary, it's true. However, only fraternal (dizygotic twins are influenced by heredity, and then only in some cases. If your mother or maternal grandmother was or had fraternal twins, you might have inherited a gene for hyperovulation, increasing your chances of conceiving twins also.

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