Can FT3 help with Fruchtbarkeit?

The question of whether FT3 (free triiodothyronine) can improve fertility cannot be answered from the provided context, which contains no information on thyroid hormones or fertility. Generally, thyroid hormones play a crucial role in both female and male reproductive function. Both hyper- and hypothyroidism can impair fertility. However, FT3 is a biomarker, not a treatment. Thyroid hormone supplementation (e.g., levothyroxine) is only indicated for confirmed hypothyroidism, not based on isolated FT3 levels. Self-medication with FT3 is dangerous and can cause thyrotoxicosis, arrhythmias, and other serious side effects. Evidence for direct fertility improvement from FT3 supplementation in euthyroid individuals is weak and not supported by clinical guidelines. For fertility issues, a medical workup including thyroid function tests (TSH, fT4, fT3, antibodies) is essential.