New York, Dec 9 (ANI): Parents often wait too long to discuss sex with children, with the result that a significant number of kids become sexually active before the chat, says a new US study.

Researchers at Harvard University questioned 141 teenagers in the ages of 13 to 17 and their parents to come up with their findings.

It was found that 40percent of boys and 46percent of girls had already become sexually active before their parents could talk to them about sex.

Two-thirds of the boys reported they had not spoken to parents about condom use before having intercourse.

“I think parents today want to talk to kids but they don”t know where to begin,” the New York Daily News quoted Dr. Mark Schuster, co-author of the study and chief of pediatrics at Children