Did the Neanderthals make us FAT? Ancient genes in human DNA linked to fat build-up in Europeans | Mail Online: "Neanderthals might have been extinct for 30,000 years but their genomes live on in modern humans.
And now scientists believe that modern Europeans share a number of genes involved in the build-up of certain types of fat with Neanderthals. The same genes were not seen in people from Asia and Africa, however.
It is though that ancient genes might have helped Europeans adapt better to colder climates, giving them an evolutionary advantage."