In Hindu astrology, Mangal Dosha is an astrological combination that occurs if Mars (Mangal) is in the 1st, 2nd (Considered by South Indian Astrologers), 4th, 7th, 8th, or 12th house of the ascendant chart. A person born in the presence of this condition is termed a manglik. In Vedic astrology, Mars, Saturn, Rahu, Ketu and Sun are considered cruel planets. Mars is the cruelest planet afflicting the birth horoscope of a person. If placed unfavorably, Mars is the most damaging planet for the married life.
Mangal Dosha should be checked not only in Lagna chart but also in Moon chart and Venus chart. A person is Non-Manglik only if none of the three charts is afflicted by Mars. Mangal Dosha is also known as Kuja Dosha and Bhauma Dosha. The person having Mangal Dosha is known as Manglik. There is a belief that the negative consequences for a single-manglik marriage can be resolved if the manglik first performs a ceremony called a kumbh vivah, in which the manglik "marries" a banana tree, a peepal tree, or a silver or gold idol of the Hindu God Vishnu. The bad effects of Mangal Dosh can be solved with the help of tantrik remedies which would generally include the application of Tantras, Mantras, Yantras & Havans.