Neanderthal DNA linked to depression

A study says a person’s risk of becoming depressed or hooked on smoking may be influenced by DNA inherited from Neanderthals.

Researchers found evidence that one bit of Neanderthal DNA can boost the risk of tobacco addiction, while others can slightly raise or lower the risk of being diagnosed with depression.

It is the latest in a series of studies of the Neanderthal genetic heritage in modern people.