Throw tantrums and argue the point, but teenagers may now have an excuse for their moody behaviour . A hormone produced by the body to calm itself down during periods of stress seems to act in the opposite way in teenagers, making them more anxious , according to research published in the journal Nature Neuroscience. When the brain experiences stress , it switches on receptors using a range of chemicals including the steroid THP . In adults and people who have not reached their teenage years, THP reduces anxiety. But researchers found that in adolescent mice it increased anxiety levels. maka bukan salah aku kerana akhir-akhir ini mengalami masalah emosi. esok kertas pertama peperiksaan. takut. tahniah saudara HariryAriffin kerana lulus peperiksaan.:) sambung mentelaah.kenyang. later~~ m310254 1811