Onions are known to have antiseptic, antimicrobial and antibiotic properties which help you to get rid of infections. If a piece of onion is inhaled, it can slow down or stop nose bleeding. Those who have sleeping disorders or insomnia can have a good night sleep if they have an onion every day. Onions also help to improve the functions of the digestive system; because it releases the digestive juices and cures any problem related to digestion.