What hormone is known for its role in increasing metabolism?

The hormone that is primarily known for its role in increasing metabolism is thyrotropin, also known as thyroid-stimulating hormone (TSH). TSH is produced by the pituitary gland and stimulates the thyroid gland to produce thyroid hormones, primarily thyroxine (T4) and triiodothyronine (T3). These thyroid hormones play a crucial role in regulating metabolic processes in the body, including energy expenditure, metabolic rate, and overall metabolism.

When levels of T3 and T4 are elevated, they can lead to an increase in how quickly the body uses energy. This effect on metabolism is essential for maintaining body weight, energy levels, and the overall function of various physiological processes.

In contrast, the other hormones listed either have different main functions or are less directly involved in metabolism regulation. Adrenocorticotropic hormone primarily stimulates cortisol production, growth hormone influences growth and cell reproduction rather than directly regulating metabolism, and melanocyte-stimulating hormone is involved in pigmentation rather than metabolic processes.