Genetic advantage to those who operate on less sleep

November 29, 2011 9:50:40 AM PST
There may be a reason why some people can perform well on very little sleep.

New research suggests they may have had a genetic advantage.

Scientists in Germany found people who have two copies of a particular variant of a gene called abcc9 generally reported sleeping for shorter periods than those who had two copies of a different version of the gene.

The gene has also been linked to heart disease and diabetes.

Doctors say this study is more evidence of a connection between sleep and heart health.