A puja at these four temples helps please Ketu. The effects of Ketu can be both good and bad. A good Ketu signifies sudden bursts of energy, liberation, discretion, idealism, compassion, self-sacrifice, and spirituality. It is known as a great advisor and the lord of the voyage. The malefic effects of Ketu in an individual's natal chart are known as Ketu Dosha. The effects of Ketu Dosha are considered inauspicious and may destroy the potency of its conjugate planet. People afflicted by Ketu Dosha effects may be inflicted with accidents and surgeries, poor concentration, unnecessary depression, boundless worries and anxiety problems, and loss of property.