Changes in thyroid function and autoimmunity in older individuals: longitudinal analysis of the Whickham cohort.

Background: Longitudinal studies of thyroid function have demonstrated differing results. It remains unclear whether changes in thyroid function affect the diagnosis of subclinical thyroid dysfunction with ageing.

Methods: Survivors of the Whickham cohort study were evaluated on two occasions between the years 2008-2012 and 2016-2019.

Associations between subclinical thyroid dysfunction and cardiovascular risk factors according to age and sex.

Context: Subclinical thyroid dysfunction (ScTD) comprising subclinical hypothyroidism (SHypo) and subclinical hyperthyroidism (SHyper) has been associated with increased risk for cardiovascular events.

Objective: To assess associations between ScTD and cardiovascular risk factors (cvRFs) according to age and sex.

Design And Setting: Pooled individual participant data analysis of large prospective cohort studies from the Thyroid Studies Collaboration.

Importance of right communication with healthcare providers and patients about the new levothyroxine formulation: an expert opinion from Asia Pacific Thyroid Advisory Board.

Levothyroxine (LT4), being "narrow therapeutic index" drug, may lead to significant fluctuations in thyroid stimulating hormone (TSH) levels. Such fluctuations can result in clinically noteworthy disruptions in thyroid function and give rise to adverse clinical consequences. Consequently, regulatory standards for LT4 potency have been tightened, with the most stringent specifications requiring maintenance of potency within the range of 95-105% of the labeled dose throughout the entire shelf-life of the product.

Cardiovascular and bone health outcomes in older people with subclinical hypothyroidism treated with levothyroxine: a systematic review and meta-analysis.

Background: Thyroid dysfunction is common in older people, with females at higher risk. Evidence suggests that thyroid-stimulating hormone (TSH) levels naturally increase with age. However, as uniform serum TSH reference ranges are applied across the adult lifespan, subclinical hypothyroidism (SCH) diagnosis is more likely in older people, with some individuals also being commenced treatment with levothyroxine (LT4).