Thyroid disease in the elderly in the community

Area of Science:

• Geriatric Medicine
• Endocrinology
• Epidemiology

Background:

• Thyroid dysfunction is common in the elderly.
• Prevalence and clinical relevance of thyroid disease in community-dwelling, residential, and hospitalised older adults require further investigation.

Purpose of the Study:

• To determine the prevalence of thyroid disease in individuals aged 65 and over.
• To assess the utility of routine biochemical screening versus clinical suspicion for diagnosing thyroid disease in this demographic.

Main Methods:

• A clinical and biochemical study involving 559 subjects aged 65 years and older.
• Data collected from community, residential homes, and hospital settings.
• Analysis of thyroid disease prevalence and serum thyroxine levels across age strata and between sexes.

Main Results:

• Seven cases of thyroid disease were identified, yielding a prevalence of 0.94% for hypothyroidism and 0.47% for hyperthyroidism in those aged 80 and over.
• Clinical suspicion preceded biochemical findings in five of the seven identified cases.
• No significant age-related changes in serum thyroxine were observed within age strata.
• Women aged 75 and over exhibited significantly higher serum thyroxine levels than men.

Conclusions:

• Routine biochemical screening for thyroid disease in older adults is not cost-effective or justified.
• Clinical suspicion is a more reliable indicator for diagnosing thyroid disease in the elderly population.
• Age and sex are factors influencing thyroid hormone levels in older adults.