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.
But it turns out that the specifics of your menarche may say more than you realize. First period age is influenced by a huge amount of factors, including up to 100 genes in your body. The average age of first period in the Western world has been getting lower, from an average of 17 over a century ago to around 13 today. That may be partially due to better nutrition, which means that we weigh more at a younger age, and thus our bodies can cope with childbearing earlier.