American Association of Family and Consumer Sciences (AAFCS) Practice Test

What can be a result of excessive iodine intake?

1. Enhanced cognitive function

2. Excessive weight gain

3. Increased energy levels

4. Improved heart health

The correct answer is: Excessive weight gain

Excessive iodine intake can lead to various health issues, one of which is excessive weight gain. When the body receives too much iodine, it can disrupt the normal functioning of the thyroid gland. The thyroid is responsible for regulating metabolism, and an imbalance in iodine levels can lead to conditions such as hyperthyroidism or hypothyroidism, both of which can affect weight. In cases of hyperthyroidism, while the metabolism may initially be increased, the body's systems can eventually become overwhelmed, leading to complications that can affect weight and overall health. Conversely, if the excessive iodine leads to hypothyroidism, this results in a decreased metabolic rate, which is also associated with weight gain. Therefore, while not a direct cause, the altered hormonal balance from excessive iodine may lead to fluctuations in weight, making it a valid consequence of high iodine intake. Other options such as enhanced cognitive function, increased energy levels, and improved heart health generally do not correlate with excessive iodine intake. Instead, they are often seen as benefits associated with normal or sufficient iodine levels. However, too much iodine can negatively impact overall well-being, especially related to thyroid function.