A GENE linked to IQ might also help to prolong life.

The gene codes for an enzyme called succinic semialdehyde dehydrogenase (SSADH), which destroys GABA, a neurotransmitter that dampens brain activity and causes drowsiness. The gene comes in two common forms: the so-called "T" version is 20 per cent less efficient than the "C" version. In previous studies, young people with two copies of the T version performed slightly worse on IQ tests.

SSADH also detoxifies the brain by getting rid of excess acid, helping to protect cells from the free-radical damage that accelerates ageing.   Read More...