Evidence check: TSH Schilddrüse in the context of Fruchtbarkeit

The claim that borderline high TSH affects fertility is not pure marketing, but the evidence is nuanced. In women trying to conceive, many guidelines (e.g., American Thyroid Association) consider TSH > 2.5 mIU/L as a threshold for treatment, as subclinical hypothyroidism is associated with increased miscarriage risk and reduced fertility. However, the evidence is mixed: randomized controlled trials have not shown a clear benefit of levothyroxine therapy for subclinical hypothyroidism on live birth rates. In men, the link between TSH and fertility is even weaker. A single TSH value from a consumer test without fT3, fT4, and thyroid antibodies is insufficient for clinical decisions. MyBody-X may overstate the clinical relevance. Have your values verified by a doctor and undergo a full thyroid workup before taking any action.