Almost 50% humans are manglik.
But please don’t call it a dosha. It can prove boon or bane, both for any individual. It depends on overall horoscope.
A native becomes manglik if Mars is present in 1st, 2nd, 4th, 7th, 8th, or 12th house/bhava. And it is not dangerous until other deadly combinations supports it.
Mars is considered natural malefic in astrology and signifies army, police, murders, butchers, doctors, commander etc. Mars is brave and aggressive, and nothing to do with the softness. It also represents genitals, but I am not discussing it.
So, when mars is placed in above houses, it affects the nature and style of dealing others or partner. Though it affects in other situations also, and placement in other situation can also lead to bad married life. But these placements are little sensitive.
But whether it will give good results or bad, it depends on other influences. Like doctor and murder, both works with knife. But one is for saving life and other for….
I am going to show the manglik results on Lord Rama Horoscope.
I am picking this chart, because it is correct. Other charts present on internet are found to be little wrong. Position of Sun is given in 10th house, which is unacceptable. Also giving a debilitated mercury, an avatar can never have a debilitated planet, because this means one is doing neecha karma or had done in past birth.
So, Shri Rama was manglik. We all know about his married life, though he was very gentle and humble. Having all positive qualities of mars. But still separation in forest and again in Ayodhya due to washer man’s rant. He was loving but scarifies Goddess Sita due to royal religion.
See Mars is lord of 5th and 10th house. Now, 5th is trikona. So, Mars will not give bad results of this house to 7th house. But 10th house is not, and it is upachaya house. It can play some bad role. Mercury is present there, enemy of Mars and also malefic for this cancer lagna. So, Aries or 10th becomes more bad.
Now read carefully, Mercury is 12th lord in Aries and aspecting 7th lord in 4th house. He lost his wife away from home, and Ravana took her to Lanka, foreign place.
2nd time he scarifies her due to kingdom and royal religion. Playing role of a good king. This is the role of 10th house itself, due to work or kingdom and position.
I explained all this, just to show how things work in reality. Everyone is familiar with Lord Rama’s story so I picked him. Though there was other combination in chart, but I only explained Mars role in marriage. Mars has given support from brothers, ability to fight demons, courage etc. But he did some damage in marriage, with other’s support.
We can see, that even if Mars is good, and individual is morally sound and humble, still then Mars can do some damage, but indirectly. In these days, there can be separation due to work, family, routine etc. But love is important. A bad mars can give violent results in a relationship and no love.
Yes, being manglik is sensitive thing for marriage, but it can give many positivities. It is not worth to called it dosha.