Are Negative Ions Good For You?

  • Published on Feb 6, 2019
  • Do negative air ions improve mood, anxiety, depression, alertness?
    Part of this video was sponsored by LastPass, click here to find out more:
    Special thanks to Prof. Jack Beauchamp and Dr. Nathan Dalleska from Caltech for all their help running these experiments and discussing the research. For more, check out the links below:
    If you want to dig into the research on negative ions yourself, I suggest starting with the review studies:
    Air ions and mood outcomes: a review and meta-analysis.
    Perez V, Alexander DD, Bailey WH.
    BMC Psychiatry. 2013 Jan 15;13:29.
    Air ions and respiratory function outcomes: a comprehensive review
    Dominik D Alexander, William H Bailey, Vanessa Perez, Meghan E Mitchell, and Steave Su
    J Negat Results Biomed. 2013; 12: 14.
    Exposure of laboratory animals to small air ions: a systematic review of biological and behavioral studies.
    Bailey WH, Williams AL, Leonhard MJ.
    Biomed Eng Online. 2018 Jun 5; 17(1):72.
    Thumbnail photography by Raquel Nuno
    VFX by Alan Chamberlain
    Sound recording by Whitney Clavin
    Motion Graphics by Charlie Kilman
    Music from Epidemic Sound: "Capture a Picture 1" and "Seaweed"

Comments • 5 746

  • One Shot
    One Shot 5 hours ago

    Screw negative ions. I just fap for happiness.

  • mchume65
    mchume65 6 hours ago

    The problem I have with "studies" is that I am in my mid 60's and I have watched salt and eggs go back and forth between healthy and not healthy a few times over the decades. I have lost track of the score.

  • Joshua K
    Joshua K 12 hours ago

    Shoulda got footage going back to return the lamp

  • Bd BlaZer
    Bd BlaZer 16 hours ago

    Just go for it and stick some screwdriver in a socket. #gotionized

  • N J G
    N J G Day ago

    The guy in the salt lamp store... lol

  • MrUnlimitedTorque

    I'd like to slap that guy in the shop who's trying to tell people this junk about the light bulb and hymalaian salt BS releasing negative ions. God how supid are these people?

  • 19thills
    19thills 2 days ago

    The way he nodded though 10:15

  • Tony Reynes
    Tony Reynes 2 days ago

    How about NEGATIVE IONS WRIST BANDS that claims that they have negative ions what can you say about it please reply

  • Josh Lockie
    Josh Lockie 2 days ago

    I always saw my salt lamp as my back up source of salt if the world ends. It will definitely work for that.

  • YouCantKillUs
    YouCantKillUs 2 days ago

    I, as a chemist, cringed so hard when hearing this BS (1:01)

  • ZebrahK
    ZebrahK 2 days ago

    Who would’ve thought a silly hunk of salt that you can buy commercially, wouldn’t actually do what it says it can.

  • Seamus Martin
    Seamus Martin 3 days ago

    This is a cheep shot. If you really wanna flex than go after fake science used by lobbyists founded by our beloved institutions and businesses. 😊 give the bad guys what WE deserve, transparency.

  • logan
    logan 3 days ago

    when i was a kid, i’d sit in front of those ionizing filters because i loved that smell

  • Luke Frahn
    Luke Frahn 3 days ago +1

    Thanks, you've motivated me to get my negative ion generator fixed - it's a good one that produces next to no ozone, but it stopped working some years back.

  • ZEPHX13
    ZEPHX13 3 days ago

    11:52 Can you smell the ozone?

  • 88marome
    88marome 4 days ago

    Salt lamps with Himalayan salt (it's pink because it's contaminated!) also contains toxic chemicals that can be released into the air and hurt you and your pets.
    Please do not let your pets lick the salt lamp! Pets are smaller than you and should not injest too much salt!

  • Dumb Comment
    Dumb Comment 4 days ago

    Open RUclip video
    Get two ads at the start
    Finally into the content
    Another one...

  • • JC • SB
    • JC • SB 4 days ago +1

    Mother: Son, the salt is over, buy somr in the...
    son: BRING ME THE LAMP,!

  • Derva Kommt von hinten

    so what you´re saying is we should take a torch to the saltlamp?

  • jim crow
    jim crow 4 days ago

    Hey wait a minute, first we need to smoke some salvia right?

  • sruthimol ts
    sruthimol ts 5 days ago

    Wow. Such a wonderful video. Thank you Sir

  • Mason M
    Mason M 5 days ago

    "Significant effect" lesser channels would stop there. Thank you for digging deeper.

  • Cool Man25 /Nintendo Nerd

    4:43 Why does he remind me of kermit

  • winesap2
    winesap2 5 days ago

    I can't believe we live in a country that allows products on the market that don't do what they say they are supposed to do, and especially if they cause harm by releasing pollutants. This is why we need to get the money out of government and especially get the anti-science neanderthals out of office.

  • winesap2
    winesap2 5 days ago

    I love that science can so easily explain things that people pulling stuff out of their ass or repeating what someone else pulled out of their ass cannot. It's rare that there is ever even a grain of truth to woo woo ideas, but it's good to know what is and isn't true if there is some truth there.

  • Ralph W
    Ralph W 5 days ago

    Build a waterfall in your house.

  • Matthew Tong
    Matthew Tong 5 days ago

    So why don't we use these systems to repair the ozone layer? Oh thats right, global warming is a lie so why pretend to fix a problem we didnt cause.

    • Jeff Vader
      Jeff Vader 3 days ago

      The ozone layer is self-repairing from the UV-induced reaction of oxygen into ozone. Human intervention would not be needed.

  • TonkarzOfSolSystem
    TonkarzOfSolSystem 5 days ago

    Couldn't you just make a little indoor waterfall?

  • Matthew Tong
    Matthew Tong 5 days ago

    More justification, we live in an electric universe.
    Torroidal jets
    Brain function
    Mushroom communication
    Geo-Magnetic fields
    Solar dynamo

  • JaneFord
    JaneFord 5 days ago

    The NIOSH recommended exposure limit for ozone is 0.1 ppm, so not the level that the ionizer reaches.

  • JaneFord
    JaneFord 5 days ago

    However, ionizers do not generate the amount ozone typical of ozone generators.

  • v c
    v c 6 days ago

    I appreciated that you distinguished between clarifying low anion density effects, high density anion density, the issue with the anion studies itself, the salt lamp, potential tourmaline, and natural sources, maybe effect on pollutants etc. Teasing apart what part could be plausible vs probably not vs kind of speculation Well done. More helpful than bashing with little explanation

  • mmmk
    mmmk 6 days ago

    Published and peer reviewed... Guess science has become a revenue machine. What's the point of university anymore???

  • ליהי גולדשמיד

    This video emphasizes the importance of scientific literacy. I think I will use it in class. Thanks Derek!

  • sciamhach
    sciamhach 6 days ago

    11:35 People buy ozone generators, because they think it makes their house air "fresh"...

  • Michał Włodarkiewicz

    "Ask any chemist worth their SALT" Killed me right there XD

  • Duke Makedo
    Duke Makedo 7 days ago

    This is justa mess. Negatively charged ozone is not negatively charged chlorine. How could anyone generalize human reactions to these two? I think someone back there confused free radicals and ions.

  • Rebecca Gillan
    Rebecca Gillan 7 days ago

    My dad had COPD, and he tried an ion air thingy. He used it maybe 3 days because he realized he needed his nebulizer more when it was runners no.

  • DefektiveEnvy
    DefektiveEnvy 7 days ago

    I just use salt lamps for dim mood lighting 😊✨Great video!

  • Ambidextrous
    Ambidextrous 7 days ago


  • Jaden Pelate
    Jaden Pelate 8 days ago

    The guy at 1 minute 10 seconds in the video just making so much stuff up it hurts.

  • Hzul Noobie
    Hzul Noobie 8 days ago

    Whaaaaa... So negative ions is good but also not??

  • Mrs
    Mrs 8 days ago

    Aww I gotta admit I really wanted those lamps to be effective :D Oh well, I'm gonna get one anyways, they look so pretty

  • Tristam Stone
    Tristam Stone 9 days ago +1

    I have never assumed they work by ionisation but by reducing the blue spectrum light that suppresses melatonin. Either that or they are simply less bright. In the search for what works, its often better to not throw the baby out with the bath water but instead, understand perhaps why something works and how powerful that effect is. I remember when I was a child yoga, massage and meditation were all considered the placebo effect. 30 years later the research has finally caught up.

  • Ankesh pandey
    Ankesh pandey 9 days ago

    Love from India

  • J. M. Pérez
    J. M. Pérez 9 days ago

    No, they're not good for you because they're so negative lol

  • PTNLemay
    PTNLemay 9 days ago

    That power-stance though.

  • Cry Whit
    Cry Whit 9 days ago

    OK, I get the salt lamps are junk but why do I feel more peaceful around them? Can the light have this effect?

  • J.Z.G
    J.Z.G 10 days ago

    791 hippies are bumbed about wasting their money

  • Joshua LaFond
    Joshua LaFond 10 days ago

    Next question: do all ion studying scientists have funny voices?

  • Joshua LaFond
    Joshua LaFond 10 days ago

    Question to Professor Jack: "How long have you been studying ions?"
    Professor Jack: "Well... I've been studying ions...for..."
    He should have said "Eons!"
    Instead, he said "uh, about 55 years."
    What is this world coming to?! Does no one see the cosmic humor at our fingertips, on the tips of our tongues? Say it!!!

  • Savvy spender
    Savvy spender 10 days ago

    great video! you do such a great job researching. Kudos
    Also, Ill keep using my salt lamp because I love the light it gives off! haha

  • Markimoop
    Markimoop 10 days ago

    Essential oils for nerds

  • Hawkins Corp.
    Hawkins Corp. 11 days ago +1

    Damn, i have two Himalayan salt lamps thinking that it may do some good. They make great night lights and if people believe their doing good then isn't that better than nothing? like a placebo. So what the hell I'm gonna keep my salt lamps.

  • Michael
    Michael 11 days ago

    hence the funny part of "ozone generating air purifiers", some of them actually brag about their ability to create ozone even though ozone is an irritant to the respiratory system. "clean the air in your home by making it toxic!"

  • Mira Ceti
    Mira Ceti 11 days ago

    @2:36 left down - Th238 doesn't exist, you mean U238. Please correct it. There is no information how many ions are created with the air purifier. But great work!

  • Polar Bear Hero
    Polar Bear Hero 12 days ago

    Keep salt lamps away from cats. They become salt licks and kill your cat.

  • A J
    A J 13 days ago

    Salt lamps create nice, ambient lighting. That's about it. :)

  • TOMeightoh
    TOMeightoh 13 days ago

    1:10 Sounds like he thinks its BS himself lol

  • Palmtreegal3
    Palmtreegal3 13 days ago +1

    Damn get wrecked salt lamp and ionized air “purifier”

  • Kim Burke
    Kim Burke 14 days ago

    where does the net positive charge go?

  • Wentworth Walker
    Wentworth Walker 14 days ago

    I'm no expect on the subject by any means but we're in the midst of the ozone layer being destroyed couldn't we say make much larger Ionic purifiers and produce more ozone that way?

  • lahshad cl Shadu
    lahshad cl Shadu 15 days ago

    if I where you , i would have beaten and bought my money back from that guy who sold me the salt lamp.

  • 8Lec
    8Lec 15 days ago

    You really shouldn't be using a gimbal to vlog...(there's a strange jello effect and you are gonna get tired) It looks a little strange, get a wide angle lens with stabilisation and turn on IBIS in your camera and you should be good.

  • Sozo Doe
    Sozo Doe 15 days ago


  • Ahmad Qureshi
    Ahmad Qureshi 16 days ago

    Great video

  • Hannes Niklasson
    Hannes Niklasson 16 days ago

    So the Chernobyl workers felt good before they died a painful radiation death?

  • Jarid Gaming
    Jarid Gaming 17 days ago +1

    Hearing that guy talk about that rock salt is cancer.

  • firedreams1
    firedreams1 17 days ago

    the idea seems similar to free radicals and antioxidants

  • Yourmoms Asshole
    Yourmoms Asshole 17 days ago


  • Albert Stoykov
    Albert Stoykov 17 days ago

    I have an Ionizer in my car and I can say it confirms what they said at the end - The Ions cling to any chemicals or big particles and stick to the surface. I found that when I have it on, my car feels clean and the air inside has no particles flying around, so at the very least I am not breathing them in.

  • MavTuber
    MavTuber 18 days ago

    So, is it always just the exercise, the walk to a specific location? - Asking because I read a while ago that higher places above plains have a relaxing effect on people; reasoning was that our ancestors prefered them as they offered a way to see far and unobstructed, making it easier to see enemies, so they felt safer. - Another time it was natural bodies of water that had an inherant relaxing effect supposedly. - Any insights?

  • Reyemhol Lrak
    Reyemhol Lrak 18 days ago

    Dr. Nathan Dalleska sounds like Kermit the Frog.

  • Avivamae
    Avivamae 18 days ago

    Loved this! Also that house he went in was really beautiful!

  • FUSHION 69
    FUSHION 69 19 days ago

    So this could possibly be a paranormal reaction explanation?

  • Daniel Chase
    Daniel Chase 20 days ago +1

    I have diplomas in parapsychology and psychology and can say with 100 percent certainty that negative ions do have a positive effect on people. A great example is remember how you feel after a lighting storm, this is because the atmospheric ions have changed.

  • Pavel Peev
    Pavel Peev 20 days ago

    Vertisium -Would you ake a video about Grounding ?

  • Neil Deep
    Neil Deep 21 day ago

    holistic medicine is full of crap. they trick you like their priests, for money.

  • DZYingHua
    DZYingHua 21 day ago

    trees killed spent on those prints? xdjustajoke(1/2)

  • Crageth
    Crageth 21 day ago

    I dont know if ions are good for me, but when I go out after a storm I feel calmer and I think that is what counts. The little feel good moments

  • Cayden Fowler
    Cayden Fowler 22 days ago

    *Why is a scientist using Windows 8...*

  • Patryk Nowicki
    Patryk Nowicki 22 days ago

    Guys, I have the best solution for the Ozone Hole problem. How about we send all those pesky "Air Purifiers" up there in a rocket and make some good use of them?

  • Wopadopadoobawop
    Wopadopadoobawop 23 days ago

    Sociology is F tier science, bottom. Its like if social studies said "hey, what if I bullshitted the scientific process and didn't actually try to make an effort and call it science".

  • MultiYuniversal
    MultiYuniversal 24 days ago

    so salt lamps are rip offs...

  • Charmx250
    Charmx250 24 days ago

    I have those lamps in my classroom.

  • pratik ghosh
    pratik ghosh 25 days ago

    Derek, Can you do an episode on House plants, please? :)

  • mark burns
    mark burns 25 days ago

    What are the dangers of ozone?

  • Nibelung Valesti
    Nibelung Valesti 26 days ago

    Nice house, mouse.

  • Thomas Hyde
    Thomas Hyde 26 days ago

    So with this new information, I now have my question is would a small backyard or tabletop fountain increase Negative Ions?

  • The Real Jajeh
    The Real Jajeh 26 days ago

    It’s fake, go exercise.

  • shakthi sabarinath
    shakthi sabarinath 26 days ago

    What about ion concentration inside different Forest and plants

  • solokat1980
    solokat1980 27 days ago

    Very misleading video! Truth is that a salt lamp will oxidize the air, not ionize, which still can be beneficial. Also... when a small amount of ozone is created by high voltage negative ionization of the air, the ozone can also be beneficial, as it oxidizes the air. Ozone is not a pollutant! Ozone neutralizes pollutants. Too much ozone would be harmful though, just as too strong of a hydrogen peroxide solution would be harmful.

  • Mortimer Fil
    Mortimer Fil 28 days ago

    What do you think about 5G? Is it safe or not?

  • Jakob Rinman
    Jakob Rinman 28 days ago

    Man, you make so good content!😊👍

  • dent tech
    dent tech 29 days ago

    I almost feel salt lamps, in a dark room, give me a campfire feeling. The feeling from a campfire in undeniable. Nearly everyone that i have ever witnessed can sit for hours staring at them (campfires). Why is that?

  • sbowesuk
    sbowesuk 29 days ago +1

    Yikes! This video debunked quite a few conventional wisdoms. Salt lamps failed because they literally don't produce ANY negative ions at all, and air purifiers failed because they fill the air with potentially harmful ozone. The air purifier revelation is particularly alarming, since such products may be harming peoples' health, not helping it. Regulators seriously need to look into that.

  • awesome369
    awesome369 29 days ago

    So the rings work?

  • REDD
    REDD 29 days ago

    So vibes do exist!!!!!

  • CarbonCuber314
    CarbonCuber314 29 days ago

    So in other words negative ions don't really do anything but create ozone.

  • Ente Fetz
    Ente Fetz 29 days ago

    The electronic lab in which I am working uses air ioniser fans to make the air more conductive to prevent buildup of electricity charges which would cause ESD damage in electronics.
    Sitting next to these fans, I noticed that I get headaches and tired. Suspected it could be the ozone, but now I know it's definitely not the ions