The study, published in Menopause Journal, which is a collection of data from several previous studies, involving 6000 women respondents in the United States, Poland, Turkey, and Iran.
Women who did not smoke on average reach menopause between the ages of 46-51 years. While women who smoke, menopaue occurs more rapidly between the ages of 43-50 years.
During menopause, the ovaries stop producing eggs. Therefore, menopausal women can no longer pregnant. "Our results prove that smoking had a significant relationship with the occurrence of menopause. We recommend that women avoid this habit," said Volodymyr Dvornyk, researchers from the University of Hong Kong, as reported by Reuters.
Dvornyk and colleagues analyzed the women aged 50 or 51 years who experienced menopause late or early. Than 43,000 respondents, found 43% were smokers. This shows the number who experience early menopause than women non-smokers.
According to Jennie Kline, an epidemiologist from Columbia University's Mailman School of Public Health in New York, says there are two theories why smoking can cause premature menopause. Smoking has the effect of how the female body to make or rule out the use of estrogen. Some researchers also believe that components in cigarette smoke can kill the eggs.
Sayngnya, Dvornyk team had no information how long the women had smoked and how many cigarettes smoked a day. So the research team could not determine how these factors influence the age of menopause.