the executive power of the federal government is vested in the president. the president has the power to appoint ambassadors, members of the Cabinet, Justices of the Supreme Court and Judges of the lower Federal Courts.
Image: Film Magic/Film Magic/Getty. Stress is the most common cause of irregular periods. Cortisol, the stress hormone, has a direct impact on how much estrogen and progesterone, two sex hormones, gets produced by the body. If you have too much cortisol in your bloodstream, the time and flow of your cycle could change.
Causes of Absent Period. A menstrual cycle that has stopped is not a disease, it may be a sign that there is an underlying imbalance in the body. A regular menstrual cycle is regulated by a complex system of messages and actions orchestrated by the endocrine system. The endocrine glands work together to send messages via hormones.