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Many sources claim that salt lamps are natural negative ion generators, although there are some important points to understand:
What are negative ions?
At any given time, there are both positive and negative ions in the air. As a flashback to freshman science class:
“An ion is an atom or molecule in which the total number of electrons is not equal to the total number of protons, giving the atom a net positive or negative electrical charge.”
Positively charged ions are also known as cations, while negatively charged ions are anions. The positive or negative charge makes ions able to move and bond easily.
Negative Ions in Nature
Negative ions occur more often in nature and they are often created by things like lightening storms, sunlight, waterfalls, and ocean waves. Running water is considered nature’s greatest source of negative ions and may be one of the things that contributes to the refreshing scent of waterfalls and the beach. In fact, this is one of the reasons people often report feeling renewed or refreshed after a storm or at the beach.
WebMD explains some of the benefits of negative ions in the air:
Generally speaking, negative ions increase the flow of oxygen to the brain; resulting in higher alertness, decreased drowsiness, and more mental energy,” says Pierce J. Howard, PhD, author of The Owners Manual for the Brain: Everyday Applications from Mind Brain Research and director of research at the Center for Applied Cognitive Sciences in Charlotte, N.C.
“They also may protect against germs in the air, resulting in decreased irritation due to inhaling various particles that make you sneeze, cough, or have a throat irritation.”
And for a whopping one in three of us who are sensitive to their effects, negative ions can make us feel like we are walking on air. You are one of them if you feel instantly refreshed the moment you open a window and breathe in fresh, humid air.
Places like waterfalls and beaches where negative ions are naturally produced can have a negative ion concentration of up to 10,000 negative ions per cubic centimeter whereas busy cities can have negative ion levels as low as 100 ions per cubic centimeter.
Do Salt Lamps Generate Negative Ions?
Short answer: Yes. But not in large amounts.
Spending time in nature, especially around water, is definitely the best way to get exposure to negative ions, but salt lamps also generate small amounts, especially when used consistently over time.
Since positive ions are often created by electronic devices like computers, TVs, microwaves, and even vacuum cleaners and can often exacerbate problems like allergies, stress and sleep trouble. Negative ions can neutralize positive ions (they bond together) and help cleanse the air. Additionally, salt lamps offer a soothing glow that many people find relaxing.
I don’t use salt lamps strictly as a negative ion generator, but keep them around the house, especially near electronics. If negative ions are the goal, using a negative ion generator would be a much more concentrated source.
But, Salt Lamps ARE Hygroscopic
Salt, by its nature, is hygroscopic
, meaning that it attracts water to its surface and this water evaporates quickly due to the small amount of heat from the light source (this is also why salt lamps tend to sweat and appear wet in humid climates).
Small amounts of water vapor is present in the air and can carry things like mold, bacteria, and allergens. Salt lamps attract this water vapor and the things it carries to its surface and removes them from the air. This is one of the main benefits of salt lamps, and one of the reasons we have them in most rooms of our home.
The Benefits of Himalayan Salt Lamps
Salt lamps may not be the negative ion generation panacea they are made out to be, but we have them in many rooms of our house for other reasons:
1. Great Night Light and Low-Light Lamp
Research has shown that different colors of light affect the body in different ways. My own doctor recommends avoiding blue light after sunset because it can interfere with circadian rhythm and disrupt sleep hormones.
Unfortunately, many modern light sources like cell phones, tablets, computers and TVs emit a lot of blue light and many of us spend a lot of time staring at these, especially in the evening.
Salt lamps, on the other hand, offer a warm orange glow, similar to the hues found in a campfire or by candlelight. For this reason, they are a great light source for the evening and can even be used as a night light without negatively affecting sleep.
2. May Improve Air Quality
Salt lamps are not a spectacular source of negative ions. However, due to their hygroscopic properties, they may improve the air in other ways. Besides offering a soothing glow, they can attract pollutants in the air and even help neutralize the effects of electronics.
3. Light and Color Therapy Benefits
These soothing lamps may also help boost mood and energy levels, especially for those with Seasonal Affective Disorder (SAD). The soft orange hues are one of the soothing colors often used to calm mood and increase focus. The small amounts of negative ions may also be helpful in boosting mood as well
4. Soothing for Allergies
My brother in law has struggled with asthma and allergies for much of his life and he found relief from using a Himalayan salt inhaler
. Others notice a difference from having salt lamps in their homes or offices.
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