Blood sugar test - blood. A blood glucose test measures the amount of a sugar called glucose in a sample of your blood. Glucose is a major source of energy for most cells of the body, including brain cells. Carbohydrates are found in fruit, cereal, bread, pasta, and rice. They are quickly turned into glucose in your body. This raises your blood glucose level. Hormones made in the body help control blood glucose level.
African American Girls Get Earlier Periods. This is an interesting factor that hasn't been fully explained: Race does seem to have a genuine impact on your menarche time. The difference isn't great â in the U.S., the average age of menarche is 12.88 for white girls and 12.16 for African American girls.
Fewer than 10% of U.S. girls start to menstruate before 11 years of age, and 90% of all US girls are menstruating by 13.75 years of age, with a median age of 12.43 years. This age at menarche is not much different (0.34 years earlier) than that reported for U.S. girls in 1973.he average age of menarche is about 12.5 years in the United States, 12.72 in Canada, 12.9 in the UK and 13.06 Â± 0.10 years in Iceland. A study on girls in Istanbul, Turkey found the median age at menarche to be 12.74 years.