Well-meaning academics even introduced spelling absurdities such as the âsâ in the word âisland,â a misguided Renaissance attempt to restore the etymology of the [unrelated] Latin word insula. 1  A discrete, meaningful unit of language which is approved by some authority.
What is an overactive thyroid? Hyperthyroidism happens when the thyroid becomes overactive and produces too much of its hormones. Hyperthyroidism affects women 10 times more often than men, and is most common in people aged 20-40.
Overactive thyroid: Hyperthyroidism. Hyperthyroidism is a disorder in which the thyroid gland makes and releases more thyroid hormone than the body needs. Your doctor may say you have an  overactive thyroid or refer to the condition as overactive thyroid disease.. Your thyroid gland is located in the front of your neck.