AAS can suppress thyroid function through several mechanisms: reducing TBG (thyroid binding globulin) which artificially lowers measured total T4/T3, suppressing TRH/TSH secretion at high doses, and potentially causing direct pituitary effects. However, many athletes on AAS have subclinical hypothyroidism that predates AAS use and becomes symptomatic under the metabolic demands of training.
GearCheck connects glossary concepts to your actual bloodwork — showing exactly where your values sit and what they mean in the context of your protocol.
Analyze My Bloodwork →GearCheck provides blood marker analysis and harm reduction education. Information is for educational purposes only and does not constitute medical advice. Always consult a healthcare professional.