This explanation has the great benefit of sounding scientific. Who really knows how ions are formed in the first place or what will happen to blocks of heated salt rock, anyway? One person with pretty deep knowledge on the topic is Caltech professor of chemistry Jack Beauchamp, an expert in (among other things) the myriad processes that generate ions and the analytical methods used to detect those ions.
There have been more than 2,000 studies exposing the toxic effects of electromagnetic fields from all sources. Scientists have come to the scary conclusion that “chronic exposure to even low-level radiation (like that from cell phones) can cause a variety of cancers, impair immunity, and contribute to Alzheimer’s disease and dementia, heart disease, and many other ailments.” (3)
Incidentally, that nice pinkish color that glows once the bulb is turned on is the only thing you are going to get from a salt lamp. Salt lamps may look neat, but claims that they can do anything medically rely — fatally — on the claim that the lamps produce negative ions and then further rely on a series gross simplifications or misinterpretations of science to argue that those negative ions (which don’t exist in the first place) could affect you in any meaningful way.
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Himalayan pink salt lamps are a great way to naturally enhance your mood or to help you relax and unwind at the end of the day. At the same time and on the opposite side of the coin, HPS lamps are great for improving concentration. Again, this is due to the effect of the negative ions on your body, improving blood and oxygen supply to the brain and other organs, as well as providing a boost of serotonin – the neurotransmitter which makes us (literally) feel happy.

A Himalayan salt lamp is a lamp formed from natural Himalayan salt and absorbs water and particles from the air. It removes negative ions, and replaces them with positive ions, while  purifying  the air and keeping your lungs clear. Salt crystal is perfect for those with allergy sensitivity, as the salt lamps work to purify the air and emit ions for better air quality. The light glow of the lamp itself creates a calming sensation that is perfect for rejuvenation, relaxation and reflection.
That being said, one thing you will have to keep in mind is making sure you avoid purchasing a fake Himalayan salt crystal lamp. Most salt lamps emit a soft, warm glow. Be leery of lamps that give off too much light. Also, some crystal lamps are white. Himalayan white crystals do exist but are rare and expensive. So if you find a white crystal lamp and a low price, be cautious. Lastly, make sure the crystal was mined from Kewra, Pakistan, or elsewhere along the Himalayas—the only place where true Himalayan salt is found.

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.”

 While “radioactive waves” are not—strictly speaking—a thing, what the author is likely talking about is an electromagnetic field generated by household electronics. The issue is that the only problem a salt lamp (via its dubious negative ionizer mechanism) would theoretically solve is a preponderance of positively charged ions in the air which would be in turn neutralized by the negative ions. An electromagnetic field will only generate ions if the voltage is high enough to cause an electric discharge, and the electromagnetic fields generated by household appliances are not that that strong, per the WHO:
The Himalayan salt lamps 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. HIMALAYAN GLOW Himalayan Salt Lamp is minded, hand carved...
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.

This brings me to my next point. Atoms and molecules are less reactive when their valence electrons are organized in pairs. If they have an odd number of valence electrons, or if they have a few that are not paired together then they are called “free radicals” (Wikipedia). This does not mean that free radicals are only cations (positive ions). They can be cations, anions, or neutral. For example, neutral sodium atoms have one unpaired electron which can participate in chemical reactions with other elements, and Methylene (CH2), has two unpaired electrons on the central carbon atom. Free radicals are also not all bad. Wikipedia also states that free radicals play a key role in biology where they help to regulate the body. Usually when people talk about harmful free radicals they are referring to oxidants which loosely speaking are molecules which take away electrons from cell membranes, proteins, and DNA (cancer-causing mutations) in the human body. This is probably where the idea of free radicals being positive ions comes from because they like to steal electrons.
Scientific studies show that Himalayan Salt Crystal Lamps give your body the same relaxed feeling you experience when enjoying a day at the beach. Like the salty ocean air, our Himalayan Salt Lamps are an amazing generator of negative ions! Technically the Salt Lamps and Abundance Salt Bowls ease a person into an alpha state, a state in which you feel completely in the moment and not distracted by the stress of the day.

Our 100% premium and authentic Himalayan Salt Lamps come from the highest quality mine in the world - the Khewra Salt Mine in Pakistan. This pristine crystal salt is hundreds of millions of years old and, as a result, has special properties and a high mineral content. The bulb inside the lamp heats the salt causing it to emit negative ions that naturally clean the air in your home. So, in addition to being an original and beautiful work of art, these Himalayan Salt Lamps also have a significant health benefit. To see what sets us apart from the competition, visit our Why Buy From Us page.
Light therapy including bright light treatment and dawn simulation has proven helpful to decrease the severity of SAD symptoms. Bright light treatment alone was found to be effective against nonseasonal depression, with benefits comparable to antidepressant pharmacotherapy studies (Golden, et. al, 2005). However, the light provided by salt lamps is not similar to the light used in the study.
I appreciate the talents of writers to be able to express that which I myself struggle with to translate into words. One paragraph cannot begin to encompass the substance and specifics of how, when and exact dilution methods, methods of delivery, etc. Blue8Ball is spot on regarding the adverse consequences resulting from misuse of essential oils as well as the nonsense being peddled by greedy uninformed or (even worse, lacking a conscience ) entrepreneurs that excel at sales and marketing. I too, find it frustrating to arrive at the end of an article only to feel mislead by headlines. Sometimes I wonder if the authors of these articles choose the words used to catch our attention in the headlines, and if not, does the individual who does feel any sense of responsibility for integrity?

Himalayan salt lamps purify the air through hygroscopy. The salt lamp attracts water from surrounding areas and absorbs the water vapor molecules along with any particles that those molecules may be carrying. The light inside of the lamp helps the salt to warm up, making that water evaporate back into the air while the unwanted, foreign particles stay trapped inside the salt. Science is pretty neat, am I right?

Himalayan salt lamps have the ability to chemically and physically transform a room, and have unique health benefits. People who use pink Himalayan salt lamps say that they help to increase blood flow, reduce allergy symptoms and even help to get a better sleep. Some of the other health benefits of Himalayan pink salt lamps (HPS lamps) include reduction of mental health related disorders, improvement of skin conditions and respiratory problems such as asthma and even colds.
Manufacturers claim that salt lamps can provide a variety of health benefits by releasing negatively-charged ions into the air. These negatively charged particles are said to do wonders for a person’s health by increasing blood flow, improving a person’s mood, increasing energy levels and providing relief from the symptoms of seasonal affective disorder (SAD).
When it comes to buying Himalayan pink salt lamps, take into consideration the size of the room in which you wish to use your lamp. The coverage of a salt lamp is determined by the size of the salt crystal. For the average-sized bedroom, a smaller lamp is usually adequate, but if you’re looking to use it in a larger area like your living room, you want to go bigger. On average, to effectively cleanse the air of a space, you need one pound of salt rock for every 16 square feet (four feet by four feet) area. If needed, you can always use multiple salt lamps spread out in a single room.
So Well Himalayan salt lamps do not generate negative ions themselves. They are “hygroscopic,” which means that they attract moisture… humidity… airborne water molecules; it is a natural property of sodium chloride (hygroscopy). Since they do not generate the negative ions, they need a heat source (in this case, heat from an incandescent bulb) to accelerate evaporation, which does produce negative ions. In more humid regions, an unlit salt lamp will eventually “cry,” even creating puddles of water at its base. It is this evaporation that generates the negative ions, which are beneficial to our health.

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Positive ions are created by electronic devices and have been dubbed ‘electronic smog’ or ‘electronic air pollution’. As we all know, we are increasingly surrounded by all sorts of computers, large screen TVs, telephones, microwaves and other appliances we now deem necessary for our survival and entertainment (although only a decade ago we did perfectly well without most of these).
Received 2 as a Christmas gift from my husband hoping to help with my sinuses. Can't speak for that as I've only had them on for 2 days. They are nice size. Love them and plan to purchase 2 more for my house. Love that they have a dimmer switch but wish it were closer to the lamp as you have to see the cord or reach behind other things to turn it on/off. I just leave mine on.