Medicare Part D Prescription Drug Coverage Costs. Medicare Part D prescription drug coverage helps beneficiaries with the costs of their prescription medications. If you decide to enroll in Medicare Part D, some of your costs may include out-of-pocket expenses such as copayments, coinsurance, monthly premiums, and annual deductibles.
The average age of menarche, or first menstruation, in the United States is 12.88 years for Caucasian girls and 12.16 years for African American girls. A popular misconception is that menarche marks the beginning of puberty; in reality, menarche occurs later in puberty.
Menarche is a normal process of maturation in girls along with the other changes that happen to a girlâs body during puberty. The timing of menarche is important. If a young girl has her first period before the age of 8 she likely has a condition known as precocious puberty.