Girls who receive the human papilloma virus vaccine before age 14 are less likely to develop genital warts compared with girls who received the vaccine at an older age, according to a Swedish study.
Researchers at Karolinska Institutet in Sweden looked at data of 124,000 females between ages 10 and 44 who got the HPV vaccine between 2006 and 2010.
New cases of genital warts declined by 93 percent among girls who received the HPV vaccine before age 14, the study found. Girls who got the vaccine after age 20 were 50 percent less likely to develop genital warts.
Girls with at least one parent who received a university-level degree were 15 times more likely to get the vaccine before age 20 compared to those with parents who had not completed high school.
The study suggests that the younger a girl receives the vaccine, the more likely she will be protected from the virus that results in genital warts.
BOTTOM LINE: Girls who receive the HPV vaccine before age 14 are less likely to develop genital warts compared with girls who received the vaccine at an older age.
CAUTIONS: The study did not follow the population long enough to know whether the vaccine prevented cervical cancer.
WHERE TO FIND IT: Journal of the National Cancer Institute, March 13
Green tea, coffee may lower stroke risk
A daily cup of green tea or coffee may help lower the risk of stroke in some adults, a study by researchers in Japan found.
Researchers at Japan’s National Cerebral and Cardiovascular Center surveyed more than 83,000 Japanese adults ages 45 to 74 about their tea and coffee drinking habits. The researchers then looked at medical records of the participants 13 years later.
The more green tea the participants reported drinking, the lower their risk of having a stroke. The participants who reported drinking at least one cup of coffee a day had a 20 percent lower risk of stroke compared with those who reported having less than one cup a day.
The findings suggest the benefits of antioxidants found in coffee and tea may outweigh the harm of caffeine on the body, the researchers wrote.
BOTTOM LINE: A daily cup of green tea or coffee is associated with a lower risk of stroke in some adults.
CAUTIONS: The findings may have been overestimated or underestimated because the study relied on self-reports of how often the participants drank coffee or tea.
WHERE TO FIND: Stroke, March 14