Teenage Marriage causes early pregnancy for the girls.....
Teenage pregnancy is formally defined as a pregnancy in a young woman who will not reach her 20th birthday before the expected birth, regardless of whether the woman is married or is legally an adult (age 14 to 21, depending on the country). In everyday speech, the speaker is usually referring to unmarried minors who become pregnant unintentionally.
The average age of menarche
(first menstrual period) in the United States is 12 years old, though this figure varies by ethnicity,
Teenage pregnancy has been defined predominantly within the research field and among social agencies as a social problem. A hospital-based cohort study was undertaken over 4 months among women admitted to a rural hospital in West Bengal. The study cohort consisted of teenage mothers between 15–19 years old and a control cohort of mothers between 20–24 years old. Data included demographic variables, available medical records, and complications viz. anemia, preterm delivery, and low birth weight. Anemia was defined as a hemoglobin level below 10 gm% during the last trimester of pregnancy, preterm delivery was defined as occurring within 37 weeks of gestation, and low birth weight was defined as babies weighing less than 2500 grams at birth. The Result: Teenage pregnancy comprised 24.17% of total pregnancies occurring in the hospital during the study period. In some cases, the father of the child is the husband of the teenage girl. The conception may occur within wedlock, or the pregnancy itself may precipitate the marriage (the so-called shotgun wedding).
Although a majority of teen marriages suffer from complications and often lead to divorce, some are successful. For example, in India, where teenagers are sometimes forced to marry by arrangement, more than 90% of these marriages will not end in divorce. In the United States, half of teen marriages dissolve within 15 years of the marriage.
The rate of teen marriage, however, is decreasing due the many opportunities that are available now that previously were not available before. Presently, teen marriage is not widely accepted in much of the world.
Teen marriage is most prevalent in culturally or geographically isolated parts of the world and it is decreasing where education is the focus of the population.