Mangal dosha or kuja dosha is present in the birth chart or horoscope when Mars (also known as Mangal or Kuja) is placed in the 2nd, 4th, 7th, 8th or 12th house in the Ascendant chart/ lagna chart or moon chart.
A person with mangal dosh in his natal chart is called Manglik. Mars is considered malefic when it is positioned in any of the mentioned houses and it leads to tensions, dissatisfactions and disasters in married life.
Positive Qualitiesof manglik people:
Mars is the planet of fiery aggression symbolysing will-power and confidence,enthusiasm,gooddriving skill,good medical skill,fighting spirit,positive thinking,detective talent,some outdoor talent sports,progress in public life,property benefits,martial arts expertise,body buiding,success in police army field,adventures, fame, fiancé as Mangalik are aggressive and hot-tempered by nature. Negatively It means intolerance, competition, argument, conflict, dominion and finally disaster.
Fiery Mangaliks have lots of energy within. This dynamic energy needs to be constructively channelized; or else it becomes destructive. Mangal dosha affects mental life and causes tension and discord in marriage. It causes delay in marriage upto age of 27.. Marriage between two Mangaliks also negates the ill-effects. It is believed that those who had ill-treated their partners in the previous birth will have this dosha.