Women who smoke tobacco may experience the onset of menopause earlier than their counterparts who never light up a cigarette, researchers say.
Several studies have showen that smokers are at increased risk of developing cancer, heart disease, and lung disease and of dying prematurely while the deadly habit triggers many specific problems in women.
Menopause is a natural condition occurring in women as they age in which their ovaries stop producing eggs and they can no longer get pregnant.
Menopausal symptoms naturally begin between the ages of 46 and 51 but a new analysis carried by researchers of the University of Hong Kong suggests that smokers hit menopause between 43 and 50, Reuters reported.
Researchers reviewed some previous studies conducted on about 6,000 women in the US, Poland, Turkey and Iran.
The team also analyzed five other studies that used a cut-off age of 50 or 51 to categorize studied women into "early" and "late" menopause.
Out of more than 43,000 participants, women who smoked were 43 percent more likely to have early menopause, says the report published in the journal Menopause .
“Our results give further evidence that smoking is significantly associated with earlier (age at menopause) and provide yet another justification for women to avoid this habit,” said lead author Volodymyr Dvornyk.
“General consensus is that earlier menopause is likely to be associated with the larger number and higher risk of postmenopausal health problems, such as osteoporosis, cardiovascular diseases, diabetes mellitus, obesity, Alzheimer's disease, and others," Dvornyk added.
Early menopause has also been associated with a slightly higher risk of earlier death, he said.
Previous findings suggested that smoking could affect the production or break up of the female hormone estrogen, which has a curtail part in delaying menopause. Some other studies, however, say certain components of cigarette smoke might kill eggs.
Dvornyk's team did not study participants' smoking habits and their other lifestyle factors which may provide more understanding about the connection between smoking and menopause.
Further researches may not only investigate the mechanism through which tobacco related substances may affect women's menopause age but also their fertility.
SJM/TE
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