Mild hypothyroidism affects 4 to 20% of the population and is more common in women than in men. The older generation suffers from a slightly underactive thyroid more frequently than the younger population.13 Between 26 and 50% of patients will progress to overt hypothyroidism.14 If you have mild hypothyroidism in your middle years, you are at greater risk to develop heart problems than in later years.15 If you have both, heart disease and a slightly underactive thyroid, it is vital that your thyroid returns to normal function. The co existence of both diseases is associated with increased risk of death from the heart disease, especially of atherosclerosis16.


  • 13Razvi, S et al. Subclinical thyroid disorders: significance and clinical impact. J Clin Pathol 2010; 63:379-386
  • 14Biondi B et al. The Clinical Significance of Subclinical Thyroid Dysfunction. Endo Rev 2008; 29 (1): 76-131
  • 15Razvi S et al. The Influence of Age on the Relationship between Subclinical Hypothyroidism and Ischemic Heart Disease: A Metaanalysis. J Clin Endrinol Metab 2008; 93 (8): 2998-3007
  • 16Iervasi G et al. Association Between Increased Mortality and Mild Thyroid Dysfunction in Cardiac Patients 2007; Arch Intern Med: 167 (14): 1526-1532