People have been (a) _______  natural remedies to cure diseases for ages. In countries like India, China, Greece, Egypt, and Rome, (b) ______ medicines are nothing new. These old practices have passed down through generations. In (c) _______  areas, grandmas apply aloevera or cold water to treat burn injury. They also use honey and tulsi leaves to cure children's (d) ______ . These treatments are effective, easy to get, often free of side effects and are not (e) ______ .

(Fill in the gaps with a suitable word based on the information of the text.)