Nitric oxide may help women preserve their fertility by fighting the effects of aging on their ovaries. "Eggs from older women may be particularly sensitive to aging after they are released from the ovaries," said Husam Abu-Soud, associate professor of obstetrics and gynecology in Wayne States School of Medicine. "As a result, the time available for optimal fertilization of these women's eggs may be quite a bit shorter than the time frame in younger women."