Maglik dosha horoscope real perspective

When it comes to marriage match it is so common to come across this term manglik dosha. This is considered powerful and should be properly taken care of. If left unnoticed this can lead to divorce, death of spouse.
First of all what is manglik dosha?
Manglik as the term means is related to marriage. In general the planets that rule the married life of men is Mars, women is Venus. manglik dosha is associated wiht Mars. Venus related issues also called as sukhra dosha can be taken in a separate post
what is the basic method to determine if horoscope has manglik dosha?
It is really easy and simple. If you have horoscope in hand, from rasi chart, check the position of mars from ascendent/lagna
With ascendat/lagna as point of focus take count as house 1 and count the position of Mars. If Mars is placed in 1,2,4,7,8,9,12 this is manglik dosha
As a general concern such horoscopes need to be matched only with women having manglik dosha. Otherwise this will affect life of the spouse (be it husband or wife).
Does this always turn out to be true?
Not always. There are certainly exceptions. One good exception is that if mars is placed in 8th house, if a planet is posited in 7th house the effect of this dosha automatically becomes less. Similarly if mars is placed in leo, mesha, vrichika, makara (exalted house), dhaus/sagittarius, meena the effect automatically becomes less. If associated with jupiter in a proper house the effect is naturally kept under control.

Once good example is horoscope of shri mukesh ambani wherein he has mars in 8th house, venus in 7th house did take care of the effects. Nitha and mukesh have always been known for their perfect chemistry