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 (/máµ»ËnÉËrkiË/ mÉ-NAR-kee; Greek: Î¼Î®Î½ mÄn month + á¼ÏÏÎ® arkhÄ beginning) is the first menstrual cycle, or first menstrual bleeding, in female humans. From both social and medical perspectives, it is often considered the central event of female puberty, as it signals the possibility of fertility.