One reason for the surge in Adderall prescriptions is that increasing numbers of children and teenagers are getting an ADHD diagnosis. However, doctors also prescribe the drug to children and adults who do not have ADHD. This increased availability of Adderall has led to widespread abuse of the medication. Because Adderall increases dopamine levels, it can trigger a feeling of euphoria among people who don't have a medical reason to take it.
Menstruation is the most visible phase of the menstrual cycle and its beginning is used as the marker between cycles. The first day of menstrual bleeding is the date used for the last menstrual period (LMP). The typical length of time between the first day of one period and the first day of the next is 21 to 45 days in young women, and 21 to 31 days in adults (an average of 28 days).
Menstrual Cycle (Definition) The menstrual cycle begins with the shedding of the uterine lining, resulting in bleeding from the vagina. A few weeks later, one ovary releases an egg and the uterine lining thickens in preparation for a potential pregnancy. Pregnancy can occur at this stage if sperm fertilizes the egg.