Free Thyroxine and Functional Mobility, Fitness, and Fatigue in Euthyroid Older Men and Women in the Baltimore Longitudinal Study of Aging

Conclusion: Older adults with low-normal FT4 exhibit better mobility, fitness, and fatigue profiles. Mildly down-regulated thyroid function appears to align with better function in old age and may serve as a biomarker of healthy longevity.

http://biomedgerontology.oxfordjournals.org/cgi/content/short/71/7/961?rss=1

Source: Journals of Gerontology Series A: Biological Sciences and Medical Sciences - June 13, 2016 Category: Geriatrics Authors: Simonsick, E. M., Chia, C. W., Mammen, J. S., Egan, J. M., Ferrucci, L. Tags: Research Article Source Type: research