Press a key to hear it. Play the healing frequencies trending on TikTok and Instagram, from 528 Hz and 432 Hz to Solfeggio tones, binaural beats and brown noise. The text printed beside each key says what is claimed and what research actually found. Your computer keyboard works too, and Esc stops the sound.
Sounds are generated live in your browser. Start with the volume low, especially with headphones. Nothing here is a medical treatment.
These have been tested in real studies. Results are modest, limited or mixed, and none of these sounds treats a disease.
ClaimPink noise deepens sleep and improves memory.
ResearchIn small lab studies, short bursts of pink noise timed precisely to slow brain waves during deep sleep strengthened those waves and improved next-day word recall, in young and older adults.
The effect comes from pulses synchronised to the sleeper's EEG, not from pink noise played all night. Evidence for continuous pink noise is weak.
ClaimWhite noise helps you fall asleep and stay asleep.
ResearchIt masks disruptive sounds, which helps in noisy places such as hospitals. A 1990 trial found newborns fell asleep faster with it. A 2021 systematic review rated the evidence that continuous noise improves sleep as very low quality.
Useful as a sound mask, not a proven sleep treatment. Keep it quiet for babies.
ClaimBrown noise improves concentration, especially with ADHD.
ResearchA 2024 meta-analysis of white and pink noise studies found a small benefit on attention tasks for young people with ADHD, and a small negative effect for those without it. It found no study on brown noise at all.
Some people like it for focus. That is preference, not an ADHD treatment.
Claim40 Hz sound and light can slow Alzheimer's disease.
ResearchIn mice, 40 Hz light and sound reduced amyloid and improved memory. A small human pilot study found it safe and well tolerated, with exploratory signs of benefit, and larger clinical trials are underway. Another lab found that 40 Hz light did not produce the expected brain rhythm or amyloid reduction in mice.
Promising but unproven in humans. Not a replacement for care from a neurologist.
ClaimTwo slightly different tones, one per ear, make your brain lock onto the beat, tuning it toward sleep (delta), meditation (theta), calm (alpha) or focus (beta).
ResearchA 2019 meta-analysis of 22 studies found a moderate overall effect on memory, attention, anxiety and pain perception. But a 2023 review of 14 EEG studies found that most did not show the brain following the beat (5 for, 8 against, 1 mixed).
May help some people relax or focus. The brain-wave tuning story is not established.
ClaimA sound bath with Tibetan singing bowls heals body and mind and balances the chakras.
ResearchAn observational study of 62 people found less tension, anxiety and low mood after a singing bowl meditation, but without a control group. A 2020 systematic review concluded that singing bowl therapies cannot be recommended yet because studies are few and at risk of bias.
A sound bath can be relaxing. Claims about healing illness or balancing chakras are not supported.
The sounds below have no reliable evidence of healing anything. They cannot repair DNA, cure cancer, or replace medication. Enjoy them as music if you like, but never delay or stop medical care because of them. In an emergency, call 112 in Europe or 911 in the US.
ClaimMusic tuned to A = 432 Hz is "in harmony with the universe" and more healing than standard 440 Hz.
ResearchTwo small pilot studies (33 volunteers, then 12 patients) reported a slightly lower heart rate and better sleep scores with 432 Hz music. They are too small to conclude anything. The cosmic and historical stories behind it have no factual basis. Compare both keys: the gap is about a third of a semitone.
Claim528 Hz, the "miracle tone" or love frequency, repairs DNA and transforms the body.
ResearchNo credible evidence shows any audible tone repairs DNA. The claim comes from 1990s books, not biology. A tiny study (9 people, 5 minutes of music) reported lower cortisol after 528 Hz music than after 440 Hz music. That is far too small to conclude anything, and it says nothing about DNA.
ClaimAn ancient scale from Gregorian chant where each tone heals something: 174 Hz relieves pain, 396 Hz releases fear and guilt, 741 Hz detoxifies, 963 Hz activates the pineal gland or "third eye".
ResearchThe set was assembled between the 1970s and 1990s using numerology on Bible verse numbers. Medieval chant never used these pitches, and tuning in hertz did not exist then. No studies show any of these effects, including the chakra associations.
ClaimGreen noise, made popular on TikTok, is the most natural and calming sound for sleep and anxiety.
Research"Green noise" has no standard definition. It usually means noise concentrated around 500 Hz, which sounds like wind or a waterfall. No study has tested it specifically. It is a sound mask like the others, and some people simply find it more pleasant.
ClaimListening to Earth's "heartbeat" at 7.83 Hz grounds and heals the body.
ResearchThe Schumann resonance is real: electromagnetic waves between Earth and the ionosphere. It is not a sound, and nothing shows hearing a 7.83 Hz beat affects health. A 7.83 Hz tone is too low to hear, so it plays here as a binaural beat.
ClaimSpecific frequencies destroy cancer cells, bacteria, viruses and parasites.
ResearchBased on 1930s claims by Royal Rife that were never reproduced. Cancer organisations say there is no evidence these frequencies treat any disease, and people have been harmed by choosing Rife devices over proven treatment.
If you have cancer or an infection, follow your doctor's treatment plan.
Healing frequencies are specific sound frequencies, measured in hertz (Hz), that are claimed to heal the body or mind. Popular examples on TikTok, Instagram and YouTube include 528 Hz, 432 Hz, the Solfeggio frequencies (174 to 963 Hz), binaural beats and coloured noise. Some sounds, such as pink noise for deep sleep, have research support for narrow effects. Most "healing" claims, such as DNA repair or curing disease, have no scientific evidence.
No. There is no credible scientific evidence that 528 Hz or any audible frequency repairs DNA. The idea comes from 1990s books. A study of 9 people found lower cortisol after 5 minutes of 528 Hz music, which is far too small to draw conclusions and says nothing about DNA.
There is no good evidence that 432 Hz music is healthier than standard 440 Hz tuning. Two small pilot studies (33 and 12 people) reported a slightly lower heart rate and better sleep scores, which is too little to conclude. The two tunings differ by about a third of a semitone.
No study shows that Solfeggio frequencies have the specific effects attributed to them, such as pain relief at 174 Hz, detox at 741 Hz or pineal gland activation at 963 Hz. The list was created by numerology in the late 20th century and is not part of medieval Gregorian chant.
A 2019 meta-analysis found a moderate overall effect of binaural beats on anxiety, attention, memory and pain perception. But most EEG studies do not confirm that the brain reliably follows the beat. They require headphones.
Pink noise has the strongest research, but mainly as short pulses timed to deep-sleep brain waves in a lab. White noise helps mask disruptive sounds, but a systematic review rated the evidence that it improves sleep as very low quality. Brown and green noise have barely been studied. Choose the one you find pleasant and keep the volume low.
Not yet. 40 Hz gamma sound and light stimulation reduced Alzheimer's markers in mice, and early human pilot studies found it safe. Larger clinical trials are underway, and one lab found that 40 Hz light did not reproduce the main effect in mice. It should not replace medical treatment.
No sound therapy has been shown to cure illness. Sound baths and singing bowls may help some people relax. If you are ill or in pain, see a doctor, and never stop or delay medical treatment because of sound healing.
At a low, comfortable volume, yes for most people. Loud sound for long periods can damage hearing, and infant sleep machines can exceed safe levels. People with tinnitus, epilepsy or a hearing condition should ask a doctor first.