Evelyn is a runner on her high school cross country team. Si…

Evelyn is a runner on her high school cross country team. Since the season began, she has felt pressed for time. Sometimes, she skips breakfast to save time in the mornings. She also barely has time for a snack between school and sports. She has lost about 10 pounds since the season began. She also realized she has not had a menstrual period for about three months. Based on these observations, Evelyn should be evaluated for