One more thing that is important to bear in mind: NMN is hardly the only longevity molecule showing promise in this area. Metformin is already widely used to improve ovulation in women with infrequent or prolonged menstrual periods as a result of polycystic ovary syndrome.44 Meanwhile, emerging research is demonstrating that the inhibition of mammalian target of rapamycin, or mTOR, may be able to preserve ovarian function and fertility during chemotherapy,45 while the same gene pathway plays an important role in male fertility, as a central player in the production and development of sperm.
