Himalayan Crystal Salt Lamps emit negatively charged ions. The most significant advantage of having a salt lamp is that it offers protection from electromagnetic radiation. 

Brazilian hospitals now commonly use negative ion generators to treat breathing problems, after a test involving 36 children with asthmatic allergies. Afterward, no attacks were suffered by any of the children that sustained regular negative ion therapy (Soyka, 1991) 

Negative ions seem to have a positive effect on the sleep hormone melatonin, and help to balance the serotonin levels in the blood. This helps to induce a restful, relaxed and peaceful state of being. Negative Ions have also been found to reduce and clear the symptoms of asthma, hay fever, and sinus problems. 

Himalayan Crystal Salt Lamps make wonderful soothing night lights for children, providing a comforting soft light, while the negative ions help to induce sleep.

In a test involving a Swiss bank office, one group of 309 worked in a negative ion-treated environment. 

Negative ion treatment has proven to be successful in reducing the overproduction of serotonin, and therefore successful in alleviating depression in some cases (Kreuger, 1957).