👉 Euthyroid is a word that refers to a condition in which an individual's thyroid gland produces too little or no thyroid hormone. This can lead to various symptoms such as fatigue, weight loss, and irritability. Euthyroid disorders are usually inherited and can be caused by genetic factors, environmental factors, or both. Euthyroid is often associated with certain medical conditions like hypothyroidism (a condition that causes an individual's thyroid gland to produce too little thyroid hormone)