Regulatory Mechanism for Thyroid Hormones

The human body maintains a complex balance of various physiological processes to ensure homeostasis. One key system involved in this regulation is the endocrine system. Hormones produced by endocrine glands are vital in controlling several bodily functions, including metabolism, growth, and reproduction. For example, the hypothalamus plays a crucial role in releasing hormones that regulate the pituitary gland, which then influences other glands such as the thyroid, adrenal glands, and gonads.

Consider a scenario in which an individual is experiencing abnormally low levels of thyroid hormones, leading to symptoms such as weight gain, fatigue, and sensitivity to cold. In response to these symptoms, the hypothalamus might initiate a series of regulatory mechanisms to restore normal thyroid function. Which hormonal cascade is most likely to be involved in correcting the low levels of thyroid hormones?