NEW YORK - teenagers who have irregular periods are more likely to be overweight and to have signs of early warning of diabetes and diseases of the heart than those with menstrual cycles regular, a study said.
While the link between the irregular periods and cardiovascular diseases and diabetes is well established older women, the results, published in "fertility and sterility" suggest that doctors may be able to identify this risk much earlier - and try to do something.
"There may be a false idea of adolescent medicine...".that ' takes a few years after the onset of the first rules to get the engine running "and therefore could not want to worry about irregular menstrual cycles among adolescents until much later," said Charles Glueckl' one of the authors of the studyof cholesterol and Metabolism Center at the Jewish Hospital of Cincinnati.
"This is clearly wrong", he added, noting that even in young teenagers, very irregular menstrual cycles are not normal and should not be ignored.
Glueck and his colleagues followed 370 girls, 14 years, the study more initiated by the National Heart, Lung and Blood Institute.
Once each year, girls were requested how long he had been since their last menstrual cycle. Researchers periodically measured their levels of various hormones, glucose and insulin and blood pressure.
They also collected information on girls height, weight, and waist circumference.
The authors have defined irregular menstrual cycles as a term more 42 days, a test which meant to catch the 2 per cent of girls with less regular periods, said Glueck.
Aged between 14 and 19, 269 of girls reported regular periods to each annual visit. A further 74 of them were that a single report of an irregular period, 19 girls had two reports and eight said he was at least 42 days since their last period at three or more visits.
Girls with most of the reports of irregular periods were already heavier than others at the age of 14 years and has acquired more inch on size and weight during the study. They also had higher testosterone levels.
By age 25, those who had not reported a period a mean body mass index (BMI), a measure of weight against height of 26.8. Those who had reported irregular periods to three or more appointments had an average of 37.8 IMC while the girls who reported one or two irregular periods have BMI somewhere in the middle.
Reports of irregular periods have also been linked to higher levels of sugar in blood and insulin for 25 years.
Authors could not be sure what is happening with cycles menstrual girls' during the rest of the year. Also, the findings do not prove that irregular periods cause girls to take weight or are responsible for the increase in the levels of glucose and insulin - rather, the irregularity could be another problem.
It is possible that the ovaries may respond to changes in metabolism, such as increased insulin levels, said Alice Chang, endocrinologist UT Southwestern Medical Center, suggesting that some of the risks associated with diabetes came before problems with ovulation.
Irregular periods may be a sign of Polycystic ovary syndrome, or PCOS, which can cause fertility problems, said Glueck. But in adolescence means it can be "very successfully treated."
Chang, who was not involved in the latest study, agreed that the implications for the central offices are an important study message.
"When I see women diagnosed with PCOS, often have symptoms during adolescence, but it is not being set for them." "We must be more aggressive in adolescents on the treatment of central offices and treatment of obesity," she said.
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