A new study warns that teenagers who experience their first sexual intercourse at an early age are at high risk of contracting sexually transmitted infections (STIs).
Sexually transmitted infections such as gonorrhea, syphilis, chlamydia, HIV are major causes of medical and psychological issues globally.
The study was published in the Journal of Sexual Medicine.
The researchers from Yonsei University in Seoul used data from a Korean national survey of youth risk behaviors that is conducted annually by the Korean Centers for Disease Control and Prevention.
About 7.4% of boys and 7.5% of girls reported having STI. For both boys and girls, the chance of getting STIs increased as the age of first sexual intercourse decreased.