Herbal remedy pregnancy warning

Women should be cautious about using the herbal remedy ginseng in the early stages of pregnancy, say researchers.

A team from the Chinese University of Hong Kong has found evidence that one of the main active components of ginseng can cause abnormalities in rat embryos.

Lead researcher Dr Louis Chan said: "Before more information in humans becomes available, women should be cautious about using ginseng in the first three months of pregnancy."

The study is published in the journal Human Reproduction.