Prevalence and Incidence of Hashimoto's Thyroiditis
Prevalance of Hashimoto's Thyroiditis:
1,490,371 adults and 205,159 children in the USA 1996 1 ... see also overview of Hashimoto's Thyroiditis.
Prevalance Rate:
approx 1 in 182 or 0.55% or 1.5 million people in USA [Source statistic for calcuation: "1,490,371 adults and 205,159 children in the USA 1996 1" -- see also general information about data sources]
Hashimoto's Thyroiditis: Rare Disease
Hashimoto's Thyroiditis is listed as a "rare disease" by the Office of
Rare Diseases (ORD) of the National Institutes of Health
(NIH). This means that Hashimoto's Thyroiditis, or a subtype of Hashimoto's Thyroiditis,
affects less than 200,000 people in the US population.
Ophanet, who are a consortium of European partners,
currently defines a condition rare when if affects 1 person per 2,000.
They list Hashimoto's Thyroiditis as a "rare disease".
More information about Hashimoto's Thyroiditis is available from Orphanet
Hashimoto's Thyroiditis Prevalence: Book Excerpts
Prevelance statistics for Hashimoto's Thyroiditis:
The following statistics relate to the prevalence of Hashimoto's Thyroiditis:
- 5 times more common in women than men in the US (Academy of Family Physicians, 2004)
- more statistics...»
Prevalence/Incidence of Hashimoto's Thyroiditis: Online Medical Books
16 MEDICAL BOOKS ONLINE!
Review excerpts from medical books online, free, without registration,
for more information about the prevalence and/or incidence of Hashimoto's Thyroiditis.
Non-Hodgkin's lymphoma:
Causes and incidence
(Professional Guide to Diseases (Eighth Edition))
The cause of non-Hodgkin's lymphoma is unknown, although some theories suggest a viral source. Since the early 1970s, the incidence of these lymphomas has increased more than 80%, with about 53,000 new cases appearing annually in the United States. The reason for the increase is unknown, although it has been partly attributed to acquired immunodeficiency syndrome. Non-Hodgkin's lymphomas are two to three times more common in males than in females and occur in all age-groups. Compared to Hodgkin's disease, they occur about one to three times more often and cause twice as many deaths in children younger than age 15. Incidence rises with age (median age is 50). These lymphomas seem linked to certain races and ethnic groups, with increased incidence in whites and people of Jewish ancestry.
» READ BOOK EXCERPT ONLINE »
Source: Professional Guide to Diseases (Eighth Edition), 2005
Thyroiditis:
Causes and incidence
(Professional Guide to Diseases (Eighth Edition))
Autoimmune thyroiditis is due to antibodies to thyroid antigens in the blood. It may cause inflammation and lymphocytic infiltration (Hashimoto’s thyroiditis). Glandular atrophy (myxedema) and Graves’ disease are linked to autoimmune thyroiditis.
Subacute granulomatous thyroiditis usually follows mumps, influenza, coxsackievirus, or adenovirus infection. Riedel’s thyroiditis is a rare condition of unknown etiology.
Miscellaneous thyroiditis results from bacterial invasion of the gland in acute suppurative thyroiditis; tuberculosis, syphilis, actinomycosis, or other infectious agents in the chronic infective form; and sarcoidosis and amyloidosis in chronic noninfective thyroiditis. Postpartum thyroiditis (silent thyroiditis) is another autoimmune disorder associated with transient thyroiditis in females within 1 year after delivery.
Thyroiditis is most prevalent among people ages 30 to 50 and is more common in females than in males. Incidence is highest in the Appalachian region of the United States.
» READ BOOK EXCERPT ONLINE »
Source: Professional Guide to Diseases (Eighth Edition), 2005
Thyroid cancer:
Causes and incidence
(Professional Guide to Diseases (Eighth Edition))
Predisposing factors to thyroid cancer include radiation exposure (especially childhood radiation therapy), prolonged thyroid-stimulating hormone (TSH) stimulation (through radiation or heredity), familial predisposition, or chronic goiter.
Thyroid cancer occurs in all age-groups, especially in people who have had radiation treatment of the neck area. It affects 1 in 1,000 people.
» READ BOOK EXCERPT ONLINE »
Source: Professional Guide to Diseases (Eighth Edition), 2005
Simple goiter:
Causes and incidence
(Professional Guide to Diseases (Eighth Edition))
Simple goiter occurs when the thyroid gland can’t secrete enough thyroid hormone to meet metabolic requirements. As a result, the thyroid gland enlarges to compensate for inadequate hormone synthesis, a compensation that usually overcomes mild to moderate hormonal impairment. Because thyroid-stimulating hormone (TSH) levels are generally within normal limits in patients with simple goiter, goitrogenicity probably results from impaired intrathyroidal hormone synthesis and depletion of glandular iodine, which increases the thyroid gland’s sensitivity to TSH. However, increased levels of TSH may be transient and therefore missed.
Endemic goiter usually results from inadequate dietary intake of iodine, which leads to inadequate secretion of thyroid hormone. Since the introduction of iodized salt in the United States, cases of endemic goiter have virtually disappeared.
Sporadic goiter commonly results from the ingestion of large amounts of goitrogenic foods or the use of goitrogenic drugs. Goitrogenic foods, such as rutabagas, cabbage, soybeans, peanuts, peaches, peas, strawberries, spinach, and radishes, contain agents that decrease thyroxine (T4) production. Goitrogenic drugs include propylthiouracil, iodides, phenylbutazone, para-aminosalicylic acid, cobalt, and lithium. In a pregnant woman, these substances may cross the placenta and affect the fetus.
Inherited defects may be responsible for insufficient T4 synthesis or impaired iodine metabolism. Because families tend to congregate in a single geographic area, this familial factor may contribute to the incidence of both endemic and sporadic goiters.
Females are more commonly affected than males. Incidence increases after age 40.
» READ BOOK EXCERPT ONLINE »
Source: Professional Guide to Diseases (Eighth Edition), 2005
Goiter:
Goiter - epidemiology
(The 5-Minute Pediatric Consult)
- The most common cause of pediatric goiter in the US is chronic lymphocytic thyroiditis.
- Prevalence of goiter in the US is 3–7%, although the incidence is much higher in regions of iodine deficiency.
- Thyroid cancers comprise 0.5–1.5% of all malignancies in children and adolescents.
- Thyroid tumors and autoimmune thyroid disease are both more common in females than in males.
Goiter - prevalence
World Health Organization (WHO) Global Database on Iodine Deficiency (1993–2003)
- Global goiter prevalence is 15.8% of the general population.
- Insufficient iodine intake among school-aged children ranged from 10.1% in the Americas to 59.9% in Europe.
- 54 countries had iodine deficiency, 29 countries had excessive iodine intake, and 43 countries achieved optimal iodine intake.
» READ BOOK EXCERPT ONLINE »
Source: The 5-Minute Pediatric Consult, 2008
About prevalence and incidence statistics:
The term 'prevalence' of Hashimoto's Thyroiditis usually refers to the estimated population
of people who are managing Hashimoto's Thyroiditis at any given time.
The term 'incidence' of Hashimoto's Thyroiditis refers to the annual diagnosis rate,
or the number of new cases of Hashimoto's Thyroiditis diagnosed each year.
Hence, these two statistics types can differ:
a short-lived disease like flu can have high annual incidence but low prevalence,
but a life-long disease like diabetes has a low annual incidence but high prevalence.
For more information see about prevalence and incidence statistics.
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