We can also make older mice young again:<p><a href="http:&#x2F;&#x2F;www.businessinsider.com&#x2F;scientists-make-old-mice-young-again-2013-12" rel="nofollow">http:&#x2F;&#x2F;www.businessinsider.com&#x2F;scientists-make-old-mice-youn...</a><p>The real problem with medicine is that there&#x27;s no easy way to have &quot;agile&quot; and rapid iteration in humans. Drugs, for example, take decades and billions to get to market.