The Americans explained the growth in the number of twins in 2014

Most likely related to the introduction of IVF in modern medicine the United States. If in the year 1080, the twins appeared with a frequency of 19:1000, by 2014 this figure has increased almost twice.

New medical technologies allow to get a child even partners with reproductive disorders. IVF and artificial insemination give thousands of new lives in America. However these methods lead to a significant increase in the probability of birth of twins or even triplets.

According to the data, about 36% of all newborn twins in 2011, appeared in the result of in vitro fertilization. Another important factor, according to scientists, the so-called "aging mom". Increasingly women are having children in later years. This is also reflected on the likelihood of conceiving twins.

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