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Iodized salt, mental stress can cause hyperthyroidism

EXCESSIVE intake of iodine and mental stress are closely linked with thyroid diseases, especially hyperthyroidism, Shanghai medical experts found.
They suggest local residents to avoid eating iodized salt because they often eat sea food.
The experts interviewed 4,970 patients and doctors in 20 Shanghai hospitals to study the cause, clinical diagnosis and treatment of thyroid diseases in local hospitals.
Women with thyroid diseases are three times more than men and the most common symptoms are hyperthyroidism, thyroid nodule, and hypothyroidism.
Hyperthyroidism mainly affects people between 36 and 65 years old. Thyroid nodule in young people is more likely to be cancerous, the research found.
According to a 2010 survey covering 10 Chinese cities, the incidence of hyperthyroidism is 1.1 percent of the population, but another 2.6 percent have the disease without showing any symptoms. The incidence of thyroid nodule is 18.6 percent and the experts said the prevalence can be as high as 30 percent.


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