A woman who had her first menstrual cycle at age 10 or earlier was 27% more likely to have heart disease after age 50. A woman who had her first after age 17 was 23% more likely to have heart disease.
There were 33.7 twin births in every 1,000 deliveries in 2012. This rate was an increase of 2% over 2012, which is a very large increase for a single year.
A study has found that when children and teens take Ritalin or Concerta (both drugs are methylphenidate), they are less likely to need a visit to the emergency room due to trauma.
