The impact of medicines on men and women can differ considerably. This additionally applies to the at present most promising anti-ageing drug rapamycin, as researchers have now proven. They report that the drug solely prolongs the lifespan of feminine fruit flies, however not that of males. As well as, rapamycin solely slowed the event of age-related pathological adjustments within the intestine in feminine flies. The researchers conclude that the organic intercourse is a vital issue within the effectiveness of anti-aging medication.