Admittedly, the negative ion claim didn’t come out of nowhere. There was a 1998 study published in the journal of the American Psychological Association, and a few follow-up studies as well, that suggested negative ions could help reduce the effects of seasonal affective disorder and chronic depression. But the reality is there aren’t any studies suggesting the lamps provide anywhere near the levels of negative ions to have an effect, and when Negative Ions Information Center tested salt lamps for negative ion output, they found so few it was hard to measure.
Beatriz Puyol, based in Dahab, South Sinai, is a metaphysics and healing crystals enthusiast and has vast experience with Himalayan salt lamps and knowledge of rock salt light benefits. “I was in awe of these salt lamps the first time I used them. It made a world of difference in relation to air quality, and it does not consume much electrical power to get these negative ions released in the air.”
I read about Himalayan salt lamp they have lot of benefits and personally experienced too .It helps us energize and effortlessly improves mental health too.Mainly it fights negativity all around stimulates positivity within us helping us even fight depression .We live in a polluted world and we do not get any pure air thanks to the air pollution hence i believe this is the best air purifier to be used at our home which is even natural.

The Pulpit Rock Glow Natural 6" Salt Lamp can release negative ions into the air, creating an effect similar to an ionizer, purifying the surrounding air. This process is enhanced by the natural process of NACL resulting in the production of negative ions which eliminate the positive ions which are present in our environment, produced by computers, refrigerators, televisions and more. Thus, these lamps make the air clean, fresh and healthy to live in.
Nowadays, most of us are living in a metaphorical ocean of electromagnetic (EM) radiation which flows from our electronics (ie: television, computer, cell phone, tablet, appliances, sterio, etc). While they may be invisible, the long-term effects of EM exposure can be quite serious. Constant exposure to EM radiation is known to increase stress levels, cause chronic fatigue, and decrease the body’s immune response, among other things.
So yes, they’re beautiful, and you’re totally welcome to get one for that purpose. It’s just unlikely to provide any measurable medical benefits. But if you want one to add to your meditation routine or because it fits with your decor, go for it. “It’s a nice new-age prop to have,” Kogan says. “But also we have to be smart and not fall prey to marketing claims.” 
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