We focus on hormones as doctors, but what I'm learning is there may be more to the picture: fertility begins at the cellular level. Every time a cell produces energy, it also How Thyroid Disease Can Affect A Womans Menstrual Cycle Dr Hagmeyer We focus on hormones as doctors, but what I'm learning is there may be more to the picture: fertility begins at the cellular level. Every time a cell produces energy, it also Variability of glutathione during the menstrual cycledue to estrogen effects on hepatocytes? ScienceDirect