What can occur as a result of hypothyroidism in relation to metabolism?

Hypothyroidism is a condition where the thyroid gland does not produce enough thyroid hormones, which are crucial for regulating metabolism. When there is a deficiency of these hormones, the body's metabolic processes slow down significantly. This slowdown affects various bodily functions, including energy expenditure, weight management, and overall metabolic rate.

As a result, individuals with hypothyroidism may experience symptoms such as fatigue, weight gain, and a general decrease in energy levels. The slow metabolism means that the body uses energy more slowly than normal, impacting how it processes food and regulates body functions.

The other options suggest either an increase in metabolic activity or no change, which does not align with the known effects of hypothyroidism on the body. Thus, the correct understanding of hypothyroidism is that it results in a notable decrease in metabolic activity, leading to various physiological changes.