Why is Astrological Advice a Must to Wear Rahu and Ketu Gemstones?

Shadow planets are Rahu and Ketu. The north node is the former, and the south node is the latter. Rahu is the head, and Ketu is the tail of the serpent in Hindu mythology. In Vedic astrology, these two shadow planets are significant. Similar to positive benefits, these two planets have an impact on a person's life when they are ill-placed in the birth chart, with advice to wear Rahu and Ketu gemstones often provided as a remedy.