Baseline growth hormone levels, age, sleep quality, nutrition, training status, and genetic factors in growth hormone and metabolic signaling all influence outcomes
765 , 767 Based on these assumptions, among the 55.8 million adults age 65 and older in the United States in 2021, 770 approximately 16.7 million people (30% of all those age 65 and older) needed geriatrician care and at least 23,953 geriatricians were needed to care for them

The problem arises when this antioxidant defense is overwhelmed or depleted: *Excess HO damages thyroid follicular cells, triggering inflammation and immune activation *Oxidized thyroid proteins become neoantigens - foreign-looking molecules that the immune system attacks, initiating or amplifying autoimmune thyroid disease *Lipid peroxidation in thyroid cell membranes disrupts hormone synthesis and cellular integrity *Chronic oxidative stress accelerates thyroid cell apoptosis and fibrosis - the hallmarks of Hashimoto's progression A landmark review published in Antioxidants (MDPI, 2021) - "The Influence of Oxidative Stress on Thyroid Diseases" - confirmed that decreased glutathione levels appear to be a distinctive parameter related to the activation and development of oxidative stress in Hashimoto's thyroiditis, and that antioxidant interventions represent a promising therapeutic avenue for autoimmune thyroid conditions
doi:10.4103/iju.IJU_15_17