Natural antidepressant has its limits

For over 2,000 years, people have been taking St. John’s wort to escape bouts of anxiety and depression. But this plant with small yellow flowers isn’t for everybody, according to a new study.

St. John’s wort, now popular as an ingredient in herbal remedies, doesn’t help people with moderate or severe forms of depression, concludes the team of psychiatrists that conducted the study.