In Vedic astrology, Mangal Dosha, also known as Manglik Dosha or Kuja Dosha, is considered to be a significant astrological condition that occurs when the planet Mars (Mangal) is placed in certain positions in a person's birth chart (horoscope). This condition is believed to have both positive and negative effects on the person's life, particularly in the areas of marriage and relationships.

Mangal Dosha is said to occur when Mars is positioned in the 1st, 4th, 7th, 8th, or 12th house of the person's birth chart. The belief is that the presence of Mars in these specific houses can create challenges and obstacles in marriage and relationships, leading to potential discord, disagreements, and even marital problems. It is primarily considered to impact the marital life and the health of the spouse.

People who have Mangal Dosha in their birth chart are often referred to as "Manglik." In traditional Vedic astrology, it is believed that if a Manglik person marries another Manglik, the negative effects of Mangal Dosha may cancel each other out, leading to a harmonious and balanced relationship. However, there are various remedies and rituals suggested by astrologers to mitigate the effects of Mangal Dosha, such as performing specific poojas (rituals), wearing gemstones, or marrying a person with compatible astrological conditions.

It's important to note that while Mangal Dosha holds significance in Vedic astrology and is considered by some to influence certain aspects of life, including marriage, its effects may vary depending on the overall astrological makeup of an individual's birth chart, as well as other factors such as personal beliefs and circumstances. As with all astrological concepts, interpretations and beliefs about Mangal Dosha can differ among astrologers and individuals.