On July 8th, according to a new study by a group of researchers from the University of California, Los Angeles and other institutions, women who use e-cigarettes during pregnancy are 33% higher than those who do not give birth to low-birth-weight babies.

The study’s corresponding author and part-time assistant professor of epidemiology, Annette Regan, stated that babies with a birth weight of less than 5.5 pounds usually require specialized medical care and are more prone to early complications and long-term health problems.

The results of the study also included researchers from the University of San Francisco, Texas A&M University and the US Centers for Disease Control and Prevention. The results were published online in the Journal of Obstetrics and Gynecology.

Researchers analyzed data from approximately 80,000 mothers from the 2016-18 Pregnancy Risk Assessment and Surveillance System (PRAMS), a project coordinated by the CDC, which collects information about pregnancy before, during and shortly after pregnancy nationwide. Information about the maternal experience.

In the study, 1.1% of people reported using e-cigarettes in the last trimester of pregnancy, and nearly two-thirds of e-cigarette users said they had smoked ordinary or combustible cigarettes during this period.

"Although only a small percentage of people use e-cigarettes, we are surprised by the number of people who use e-cigarettes and combustible cigarettes at the same time during pregnancy," said Reagan, who also teaches at the University of San Francisco's School of Nursing. "We found that the low birth weight rate of e-cigarette users has increased, even for those who do not smoke."

The team reported that among e-cigarette users, whether used alone or in combination with ordinary cigarettes, the birth rate of low birth weight was 8.1%, compared with 6.1% for non-users, and the prevalence increased by 33%. However, they also found that among people who completely use e-cigarettes (http://www.ywjsks.com/), the birth rate of low birth weight jumped to 10.6%, and the premature birth rate was 12.4%, compared with 7.6 of non-e-cigarette users. %. These increases have not been seen among dual users of e-cigarettes and regular cigarettes.

"These findings are important because premature delivery means that the baby has less time to grow and gain weight in the mother's womb," Reagan said. "Most of the baby's weight gains in the later stages of pregnancy."

Nicotine is found in ordinary cigarettes and e-cigarettes, and is considered by the CDC to adversely affect fetal development. Since researchers found that women who regularly use e-cigarettes are more likely to have low birth weight than women who use e-cigarettes occasionally, nicotine exposure may be related to these harmful effects. However, they said that more research is needed to confirm this.

The use of e-cigarettes in the United States has been increasing, and these products are sometimes sold as less harmful substitutes for cigarettes and smoking cessation aids. Despite this, the researchers said that despite this, few studies have addressed the potential association between e-cigarettes and pregnant women's poor delivery outcomes.

Reagan said that the perception that e-cigarettes are less harmful than combustible cigarettes may help them to be attractive among pregnant women who have difficulty quitting smoking. These survey results indicate that e-cigarettes should not be regarded as a safe alternative to ordinary cigarettes, and that in terms of pregnancy, e-cigarettes may bring very real health risks.

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