Mars in the 1st, 4th, 7th, 8th or 12th house makes a chart ‘manglik’ — but classical texts cancel the dosh in dozens of conditions: Mars in own sign, aspected by Jupiter, matching manglik partner, and more. In practice, a large share of manglik panic involves no operative dosh at all.
When it does operate, remedies exist — Mangal shanti, Hanuman upasana, and matching with compatible charts. The rule: never accept a manglik verdict without the cancellation check. Get a second opinion.