Twins!!

Ok, every month around you know that time, I get kinda baby crazy and think about how I would love to have a baby and then I smack myself and say what am I thinking???? But still I can dream of my future and I would really love to have twins. I did a little research on how to increase your chances of twins. Which was kind of interesting in it self. I need to find out some family history.
Ways to increase your chances of Twins
1.
Eat yams.There are certain cultures that have more twins than others. One of these is a tribe where they eat a lot of yams. There is a theory that it is a certain chemical in the yams that helps the women in this culture have more twins. The African country of Nigeria purportedly has the highest twinning rate in the world, estimated at 1 in 22. Some sources attribute it to their consumption of large quantities of yams. (It's worth a try if you really want to have multiples!) 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.
2.
Be older when you get pregnant.The older you are when you get pregnant, the more likely you are to have twins. This may be because of an increased ovulation of multiple eggs, resulting in more dizygotic or fraternal twins. You (the mother) are over age 45. The chances of having twins increases with age; 17% of mothers over the age of 45 give birth to twins. Becoming a mother after age 50 boosts your odds considerably, to nearly 1 in 9!
3.
Be breastfeeding when you get pregnant.Recent studies show that if you are breastfeeding when you get pregnant that you are more likely to have twins. This is said to be caused by the depletion of calcium in your system while nursing and its effect on the egg during conception and ovulation.
4.
Be a twin. Twins have a higher rate of having twins themselves. Unfortunately you can't really influence this one. Or have a family history of twins. If you have a family history, mostly a maternal history, then you are at an increased chance of having twins yourself. These are mostly dizygotic or fraternal twins and not monozygotic or identical twins. This comes from the ability to ovulate more than one egg at any given point in ovulation. You, your mother, or her mother's mother is a fraternal twin. These women may carry a gene for hyperovulation, which means they release more than one egg during an ovulation cycle, increasing their ability to conceive fraternal twins. The chances may be high as 1 in 17 if the mother is a fraternal twin herself.
5.
Be a certain ethnicity.African Americans have a higher rate of twinning than other ethnicities.
6.
Take fertility drugs.There are actually practitioners who prescribe fertility medications like Clomid to increase the chances of having twin by inducing multiples eggs being released in ovulation. You'd be hard pressed to find one of these physicians, but they are out there. The problem is that there are risks to taking fertility drugs and it should be reserved for people who are having trouble conceiving. There are also increased risks of having a multiples pregnancy, even with "only" twins. Or try fertility treatments. Fertility treatments that go beyond fertility drugs are used only for those families that truly need it. Procedures like in vitro fertilization (IVF) and others can increase the chances that you will have twins or other multiples. Not only do they increase the risk of dizygotic twins, but also there appears to be an increase in monozygotic or identical twins. No one can deny that the availability of fertility enhancements has increased the multiple birth rate, but no study seems to conclusively pinpoint the impact. Some estimate that the chances of having twins after fertility enhancing treatment is as high as 1 in 38. Others estimate that using the drug Clomid increases your chances to 1 in 5.
7.
You've already had one set of fraternal twins. For mothers who have already had one set of fraternal twins, their chances of conceiving another set are four times greater than the average woman, or about 1 in 12!
8.
You're overweight or tall. A 2005 study published by the American College of Obstetrics and Gynecology reported a significant increase in fraternal twin births to mothers who had a BMI of 30 or higher, or who were in the top 25th percentile for height.
9.
You live in Massachusetts or Connecticut. A 1999 study found that rates in these states were at least 25% higher than the national rate in the United States.
10.
Have A Big Family. The more kids you have, the more likely you are to conceive twins in a subsequent pregnancy. No one knows the magic limit that triggers a multiple pregnancy, so you'll just have to keep trying until it happens.
11.
Birth control pills are usually thought to be 99.9 percent effective at preventing pregnancy. However, that .01 percent often results in a double whammy -- multiples. Sometimes pregnancy occurs when the pill isn't taken consistently; in other cases, the hormonal mix of a particular drug type simply doesn't provide enough coverage to completely prevent ovulation. In either case, playing around with hormones can lead to hyperovulation, increasing the chances of multiples.
FACTS on Twins
Among general populations, the chances of having twins in the 21st century are about 3 in 100, or about 3%. Your chances are better than ever; researchers have recorded an increase of nearly 60% since the early 1980s. The most recent statistics, part of a 2004 study by the National Center for Health Statistics show that twins represented 32.21 of every 1,000 births.

The statistics for higher order multiples have shown a dramatic increase in recent years. The odds of conceiving "spontaneous" triplets (i.e., without the aid of fertility enhancements) is about 1 in 8,100. Researches noted a substantial -- 400%!! -- increase in the rate of triplet births over the last twenty years.
The odds of having spontaneous quadruplets are predicted to be 1 in 729,000.
It is estimated that 60% of triplets are the result of fertility enhancing treatments; while 90% of quadruplets and 99% are due to reproductive technology.

Things that Decrease your Odds of Twins

1.
You (the mother) are Hispanic or Asian. The 2001 study by the National Center for Health Statistics found that women of Hispanic origin were substantially less likely to have twins than white or black mothers. Among worldwide populations, the Asian countries of Japan and China have the lowest twinning rates, estimated at 1 in 150 and 1 in 300, respectively.
2.
You (the mother) are under age 25. The chance that a woman would bear twins before her 25th birthday are is less than half of what it would be after age 35.
You live in Hawaii. In a study that examined multiple birth in the United States, this tropical paradise scored lowest, about 30% below the national average.
3.
You're looking for identical multiples. The rate for identical, or monozygotic, multiples is random and universal; it's the same in all populations regardless of race, heredity or other factors, and it has remained constant over time. The chances of having identical twins is about 1 in 285.

SOURCES
I had several sources, but mostly they linked together with these two sites, so if you have a further interest you can browse through these. Which I thought were pretty interesting.

http://pregnancy.about.com/od/multiplepregnancy/a/oddsoftwins.htm
http://multiples.about.com/cs/funfacts/a/oddsoftwins_2.htm