What effect does hypothyroidism have on metabolic rate?

Hypothyroidism is a condition characterized by an underactive thyroid gland, which results in insufficient production of thyroid hormones, specifically thyroxine (T4) and triiodothyronine (T3). These hormones play a crucial role in regulating the body's metabolism, which is the process by which the body converts food into energy.

When thyroid hormone levels are low, metabolic processes slow down, leading to a decreased metabolic rate. This reduction in metabolic rate can manifest in various ways, such as fatigue, weight gain, cold intolerance, and decreased energy levels. The body's ability to generate energy from nutrients is compromised, and this can impact overall bodily functions and processes.

While individuals with hypothyroidism may experience variable symptoms based on the severity of their hormone deficiency and their body's adaptation responses, the fundamental effect of insufficient thyroid hormone is a marked decrease in metabolic activity. Therefore, the correct choice accurately reflects the impact of hypothyroidism on metabolic rate.