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.
Problems with the thyroid include overactive thyroid, or hyperthyroidism, and underactive thyroid or hypothyroidism. The thyroid gland in the neck makes hormones to help regulate the body's metabolism and a person's growth.An overactive thyroid can make a person feel nervousness or anxious, be hyperactive and experience unexpected weight loss.raves' disease. This is an auto-immune condition and is the commonest cause of an overactive thyroid gland. Toxic adenomas. Nodules develop in the thyroid gland and begin to secrete thyroid hormones, upsetting the body's chemical balance. Some goitres may contain several of these nodules.