Sept. 29, 2011 -- Psilocybin, the drug in “magic mushrooms,” helps many people become more open, creative, and curious after they take a single high dose, a new study shows.

Ordinarily, researchers say, after age 30 personality is a pretty fixed part of who we are.

When people do change their stripes, it’s usually in the wake of significant life events that cause emotional upheaval, like marriage, divorce, or getting fired from a job.

Researchers say the new study, which is published in the Journal of Psychopharmacology, is one the first to show that a drug, when used in an experimental setting, can alter personality long term.

Specifically, the study found that psilocybin affects a dimension of personality called openness. Openness relates to the ability to see and appreciate beauty, to imagine, to be aware of our own and other people’s feelings, and to be curious and creative.

“Personality, after the age of 25, is relatively stable, and if anything happens, openness decreases across decades, just very slightly, but generally people become more rigid and less creative,” says researcher Roland R. Griffiths, PhD, professor of psychiatry and behavioral sciences at the Johns Hopkins University School of Medicine in Baltimore. “And this is showing an anti-aging affect if you will, on openness.”