What: Rapamycin has gotten a lot of press as a potential drug to extend fertility by up to five years. But Gideon Meyerowitz-Katz writes that the evidence is mostly in mice, and human trials are very early and so far, pretty small.

Why it matters: “It is simply difficult to assess at this stage. If you’re into following the blow-by-blow process of how science works, perhaps hearing researchers get excited about their work is interesting. But if you’re an average woman contending with the effects of aging, it’s tough to see how this is useful. (At the very least, the research will take a while.)”

Source: Slate