Addicted to coffee? It may be genetic, researchers explain

SAN DIEGO (KSWB/KUSI) — New research suggests that coffee habits, whether in excess or scarcity, could be partially linked to genetics.

Researchers at UC San Diego recently examined and compared data from U.S.-based 23andMe, the personal genomics and biotechnology company that provides genetic testing services to help people gain a better understanding of their ancestry and genetic predispositions.

The study's senior corresponding author, Dr. Sandra Sanchez-Roige, a professor...