First of all one must understand that as per astrology, each planet has its effects on the human body. Each planet covers different organs of the human body. The malefic situation of the planet may cause the diseases related to the organs that comes under the specific planet. Rudraksha plays an important role in reducing the tribulations (including diseases) caused by the malefic planets. 1 to 9 faced (mukhi) Rudrakshas are related to the planets. An astrologer suggests the native to wear the specific Rudraksha for specific planet, thus preventing the native from the diseases related to that planet.