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.
What is overactive thyroid (hyperthyroidism)? An overactive thyroid (also called hyperthyroidism or thyrotoxicosis) is when the thyroid gland produces more thyroid hormones than normal. The thyroid gland may become enlarged, or contain nodules (lumps) of overactive tissue. This excess thyroid has the effect of speeding up metabolism throughout the body.