Health and long-term consumption of dairy products easy to twins

Women who eat animal products, and specifically dairy, are five times more likely to have twins if they become pregnant, says a new US study. Gary Steinman, an obstetrician and specialist in multiple-birth pregnancies, found the results by comparing the twinning rates of pregnant women on vegan diets and those who ate animal products.
The study, to be published in this month's Journal of Reproductive Medicine, adds to scientists' understanding of how diet may influence pregnancy.
"This study shows for the first time that the chance of having twins is affected by both heredity and environment, or in other words, by both nature and nurture," said Steinman, of the Long Island Jewish Medical Center in New York. The study suggests a protein known as insulin-like growth factor (IGF) may be responsible for the increased twinning rate. It says the amount of IGF in a woman's blood may be directly proportionate to her chance of having twins. IGF is released from the liver of both animals and humans and is found in animal's milk.