
To describe: What does amenorrhea occurring in female athletes propose about the association between the menstruation as well as the body fat.
Introduction: Amenorrhea refers to the absence of regular menstrual cycles. A major cause of amenorrhea is pregnancy; there are other causes such as side effects of birth control pills and medications and the stress in addition to delayed puberty.

Explanation of Solution
Generally, athletes do vigorous exercises for developing physical strength and stamina. Research has described that the body fat level of 11% is the “critical level” for the menstruation to begin. The levels of fat vary (4%) between healthy females and active females. Amenorrhea might be stimulated due to vigorous exercises. This suggests the human body needs a particular amount of fat for regular menstruation to occur. When the level of fat in a female body drops below the normal range, the normal menstrual cycle ceases.
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Chapter 18 Solutions
Visual Essentials of Anatomy &Physiology
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