NCSF Sport Nutrition Specialist Certification (SNS) Practice Test

What is the primary consequence for females who drop below essential levels of body fat?

1. Increased metabolism

2. Loss of the menstrual cycle

3. Enhanced muscle growth

4. Improved energy levels

The correct answer is: Loss of the menstrual cycle

The primary consequence for females who drop below essential levels of body fat is the loss of the menstrual cycle, known as amenorrhea. Essential body fat levels are critical for maintaining various bodily functions, including hormonal balance. When body fat decreases significantly, the body may not have enough energy reserves to support reproductive functions, leading to hormonal changes that can disrupt or halt menstruation altogether. This condition can have further implications for bone health, overall hormonal balance, and long-term fertility. Other options like increased metabolism, enhanced muscle growth, and improved energy levels are not accurate in this context. In fact, a decrease in body fat to essential levels can lead to a lower metabolic rate and negatively impact energy levels due to insufficient energy intake. Additionally, while some may anticipate increased muscle growth from fat loss, without adequate body fat and nutrition, muscle growth can be impaired as the body may prioritize basic survival functions over muscle synthesis.