What is the difference between low Mangal Dosha and high Mangal Dosha?

There is no low or high mangal dosha. Mangal dosha results will depend upon condition of Mars in chart and other factors had to be judged as well before predicting results of Mangal dosha.

Mangal dosha forms when Mars is posited in 1^st, 2^nd, 4^th, 7^th, 8th or in 12^th house of chart. With that theory in mind, it can be assumed that half population of the world is manglik and they must be facing problems in marital life but is this assumption is true. No, it’s not and thus we had to look condition of Mars and other factors to judge mangal dosha conclusions.

Mangal dosha will give bad effects, provided

1. Mars is functional malefic planet
2. Mars is not getting aspect of functional benefic planet
3. 7^th house lord is weaker
4. D9 chart (chart to look for marital life is weaker)
5. Condition of Venus and Jupiter is weaker in birth chart

If these are the cases, then it can be assumed that Mangal dosha will trouble native in marital life.

Mangal dosha will not effect, provided:

1. Mangal is posited in own sign
2. Mangal is getting functional benefic planet aspect
3. Mangal is functional benefic planet
4. Mangal is getting aspect of Saturn, Venus or Jupiter

If Manglik dosha is severe, then Manglik dosha remedies will be required to negate Manglik dosha effects.