OBJECTIVE To evaluate the effects of subclinical hyperthyroidism of variable etiology on bone mineral density (BMD) and bone metabolism in postmenopausal women. DESIGN T he study included data of 88 postmenopausal women classified into four groups depending on the etiology of subclinical hyperthyroidism: (1) 20 with toxic multinodular goiter without history of clinical hyperthyroidism; (2) 25...

The term subclinical hyperthyroidism describes conditions characterized by a low thyroid-stimulating hormone (TSH) and normal levels of circulating thyroid hormones (thyroxine and triiodothyronine). Subclinical hyperthyroidism has the same causes as overt hyperthyroidism. These include excessive doses of levothyroxine, Graves’ disease, multinodular goiter, and solitary thyroid nodule. Most stud...

In subclinical hyperthyroidism, thyroid-stimulating hormone (TSH) levels are suppressed below normal range but serum-free thyroxine and free triiodothyronine levels are within normal range. The clinical manifestations can be highly variable and patients mostly remain undiagnosed. Sinus tachycardia, atrial premature beats and atrial fibrillation are the reported tachyarrhythmias in such patients...

OBJECTIVES There is current controversy on the association between subclinical hyperthyroidism and hypertension. Data from cohort studies have not been available yet. The present study was designed to longitudinally investigate possible associations of subclinical hyperthyroidism with blood pressure, pulse pressure and the risk of hypertension. METHODS We used data from the population-based, ...

Abnormalities in thyroid function are associated with many psychiatric symptoms. We present a report of a 15-year-old girl who was admitted to the psychiatry inpatient unit with symptoms of suicidal behavior, irritability, and impulsivity. One year previously, she had become more short-tempered, and had started to cut her wrists impulsively. Laboratory tests revealed subclinical hyperthyroidism...

INTRODUCTION There are many factors causing endothelial dysfunction. The aim was to observe chosen markers of endothelial function in patients with subclinical and overt hyperthyroidism. MATERIAL AND METHODS We studied 97 patients with hyperthyroidism: 51 with subclinical (44 F/7 M; mean age 49.3 +/- 15.9 y) and 46 patients with overt (39 F/7 M, mean age 50.4 +/- 13.2 y). The control comprise...

conclusions we revealed that thyroid dysfunction during pregnancy was associated with iugr and low apgar score even in subclinical forms. further studies are required to determine whether early diagnosis and treatment of thyroid diseases, even in subclinical form, can prevent their adverse effect on fetus. background maternal thyroid function alters during pregnancy. inadequate adaptation to th...

BACKGROUND Thyroid hormone plays a crucial role in the growth and function of the central nervous system. The purpose of the study was to examine the relationships between the status of subclinical thyroid conditions and cognition among adolescents in the United States. METHODS Study sample included 1,327 adolescents 13 to 16 years old who participated in the Third National Health and Nutriti...

the ideal approach for adequate management of subclinical hyperthyroidism (low levels of thyroid-stimulating hormone [tsh] and normal thyroid hormone level) is a matter of intense debate among endocrinologists. the prevalence of low serum tsh levels ranges between 0.5% in children and 15% in the elderly population. mild subclinical hyperthyroidism is more common than severe subclinical hyperthy...

We aimed to determine whether patients with subclinical hyperthyroidism (SH) are subject to oxidative stress. Twenty-two women and 8 men having endogenous subclinical hyperthyroidism for a duration of at least 6 months, and 21 women and 9 men healthy controls were included in this study. We measured the level of plasma malondialdehyde, as one of the lipid peroxidation markers, and the activity ...