--- title: "528 Hz Frequency Benefits: What the Research Found" description: "In small trials, 528 Hz music lowered a stress hormone and eased tension. The DNA repair claim comes from a 1999 book. What each study found." url: https://lissa.app/blog/528-hz-frequency-benefits/ language: en author: "Lissa Editorial" published: 2026-10-31 updated: 2026-10-31 publisher: "LISSA LLC" --- # 528 Hz Frequency Benefits: What the Research Found In small trials, 528 Hz music lowered a stress hormone and eased tension. The DNA repair claim comes from a 1999 book. What each study found. The 528 Hz frequency benefits that studies back up are about stress. In a small Tokyo trial, five minutes of piano music tuned to 528 Hz lowered people's cortisol, a stress hormone, and they felt less tense. The bigger promises, like repairing DNA, come from a 1999 book and a dish of cells. So 528 Hz is a good sound to relax to. Whether it relaxes you more than other calm music is still an open question. ## What is the 528 Hz frequency? It's a pitch. Anything vibrating 528 times a second makes it, and you'd hear it as a clear note just above the C an octave over middle C on a piano. 528 Hz is the best known of the nine Solfeggio frequencies, a set of tones from 174 to 963 Hz. The name is medieval. Around 1025, a monk named Guido of Arezzo taught singers a scale using a hymn whose lines start Ut, Re, Mi, Fa, Sol, La. Those syllables named steps of a scale, so "Mi" could be any pitch at all. The numbers came much later. In a 1999 book, *Healing Codes for the Biological Apocalypse*, Joseph Puleo and Leonard Horowitz presented six frequencies that Puleo said he [found in the Book of Numbers](https://sylviavilla.com/blog/the-origin-of-the-solfeggio-frequencies-part-1), by reducing verse numbers to single digits. 528 landed on Mi. Mi's line in the hymn opens on *Mira*, "wonders", and Horowitz went on to call 528 the love frequency and tie it to DNA repair. The full story, from Pythagoras to the arithmetic that makes every tone add up to 3, 6 or 9, is in [the history of the Solfeggio tones](https://lissa.app/research/solfeggio/). Lissa is coming soon. Join the waitlist and learn how to get Lissa Premium free at launch. [Get Early Access](https://lissa.app/get-started/?from=blog) ## Does 528 Hz really work? Four trials have tested it on people, along with one on rats and one on cells in a dish. ### Nine people and a piano in Tokyo At Juntendo University in 2018, nine healthy adults sat beside a speaker on two different days and heard five minutes of soothing piano music. The pieces were the same both days, but one version was tuned so that 528 Hz fell on the scale and the other used standard tuning. After the 528 version, their cortisol [went down and their oxytocin went up](https://file.scirp.org/pdf/Health_2018090514214117.pdf), and they rated themselves less tense. The standard version didn't move any of the saliva markers. Nine people is a small group, and each heard each version once. ### 162 students during exams A 2026 trial in Ankara tested university students in exam season. Each one got 20 minutes of 528 Hz instrumental music, 432 Hz music, or silence. Afterwards, the 528 group had [more BDNF in their saliva](https://doi.org/10.1002/brb3.71452) than the silent group, a protein linked to learning and mood. Then everyone took a test of focus and quick thinking, and the three groups scored about the same. ### Chanting and singing bowls Two newer trials in India set 528 Hz inside other practices. In one, 60 people with high blood pressure listened to [OM chanting pitched at 528 Hz](https://pmc.ncbi.nlm.nih.gov/articles/PMC12700779/) for 15 minutes a day, and their pulse and blood pressure fell over the month. In the other, 100 adults spent an hour a day for four weeks in [sound meditation with 528 Hz audio, singing bowls and gongs](https://doi.org/10.7759/cureus.115693), and ended with less anxiety and lower cortisol than a group that joined music sessions online. Neither trial can separate the pitch from the chanting, the meditation or the daily time spent sitting quietly. ### Rats and cells The rest of the research isn't on people. In a 2019 study, rats exposed to 528 Hz [showed less anxious behavior](https://pubmed.ncbi.nlm.nih.gov/30414050/), with the sound played at 100 dB, loud enough to damage human hearing. And in a 2017 lab experiment, human brain cells damaged with alcohol [died less often](https://www.omicsonline.org/open-access/the-effects-of-528-hz-sound-wave-to-reduce-cell-death-in-human-astrocyteprimary-cell-culture-treated-with-ethanol-2155-6105-1000335.php?aid=91771) with a 528 Hz sound wave running. ### What's well proven Listening to music lowers stress. A review of 104 trials found that music [eased stress both in the body and in how people felt](https://doi.org/10.1080/17437199.2019.1627897), with heart rate changing most. Those trials used all kinds of music at ordinary tuning. ## What are the 528 Hz frequency benefits, claim by claim? | Claim | What the studies found | |---|---| | Lower stress | Lower cortisol in nine adults after 5 minutes of 528 Hz piano music, and in 100 adults after a month of sound meditation. | | Lower blood pressure | Pulse and blood pressure fell in 60 people with hypertension who heard 528 Hz OM chanting daily for a month. | | A healthier brain | More BDNF in students' saliva after 20 minutes. Their test scores matched the group that heard nothing. | | Less anxiety | Less anxiety after a month of sound meditation, and less anxious behavior in rats at a volume too loud for people. | | DNA and cell repair | Fewer alcohol-damaged brain cells died in a lab dish. That study measured cell death, not DNA. | | Better sleep | Sleep scores improved in the chanting trial, and the gap with the usual-care group was too small to count. | | Love, miracles | These names come from the Mi syllable and from Horowitz. They're beliefs, and no study measures them. | ## 432 Hz vs 528 Hz: what's the difference? They're two different kinds of thing. 528 Hz is one note. 432 Hz is a way of tuning a whole piece of music: the A above middle C is set to 432 instead of the standard 440, which drops every note by about a third of a semitone. The "528 Hz music" in the Tokyo study went the other way. To make 528 a real note on the scale, the music was tuned so A sat at 444, slightly above standard. A = 432 puts C at about 514, so 528 isn't part of 432 tuning at all. The 432 Hz studies are just as small. In Tuscany in 2017, 33 volunteers heard the same film music in both tunings, and after the 432 version their heart rates fell by [almost 5 beats a minute](https://pubmed.ncbi.nlm.nih.gov/31031095/). The researchers never tested whether that drop was bigger than the one after 440, and 32 of the 33 could tell the two sessions apart. In two trials of athletes, music at 440 [beat 432](https://doi.org/10.1038/s41598-025-20465-0) on speed and effort. The exam study is the one that put both side by side. 528 and 432 changed different markers in saliva, and neither changed how students did on the test. If you're choosing, go by what you like hearing. Every 432 Hz trial, with what it measured, is in [A Third of a Semitone](https://lissa.app/research/tuning-432/). ## How to listen to 528 Hz 528 Hz This is 528 Hz from Lissa: one pure tone, held steady. Speakers or headphones both work, since there's no beat to keep apart between your ears. 1. Pick a time when you'd like to wind down, like after work or before bed. 2. Set the volume low enough that you could talk over it. 3. Listen for 5 to 20 minutes. The trials ran from 5 minutes to an hour. 4. Try it for a week, and notice how you feel on the days you listened. A bare tone can start to grate after a while. In Lissa you can add noise, nature sounds or music to it and save the mix you like. Play 528 Hz for 5 minutes tonight, then try the same 5 minutes with music you love, and keep whichever leaves you calmer. ## Questions people ask ### Is 528 Hz dangerous? No. It's an ordinary pitch, like a note on a flute. The only risk is volume: the World Health Organization's limit for personal listening is 80 dB for up to 40 hours a week. ### How long should I listen to 528 Hz? The Tokyo trial saw changes after 5 minutes, the exam study used 20, and the chanting trial used 15 minutes a day for a month. Nobody has found a length that works best, so start with 10 minutes and see how you feel. ### Can I listen to 528 Hz while sleeping? Yes, at a low volume. The one trial that measured sleep found only a small change, so treat it as a calm sound to fall asleep to and see how your nights go. ### What does 528 Hz do to the body and brain? In the Tokyo trial, cortisol fell and oxytocin rose after 5 minutes of 528 Hz piano music. In the exam trial, students who heard it had more BDNF in their saliva, a protein tied to learning and mood, and their test scores stayed the same. ### Why is 528 Hz called the love frequency? The name comes from Leonard Horowitz, who promoted 528 Hz from the late 1990s and tied it to love and DNA repair. Some sites also call it God's frequency, while others give that name to 963 Hz. Both are beliefs, and no study measures them. Lissa is coming soon. Join the waitlist and learn how to get Lissa Premium free at launch. [Get Early Access](https://lissa.app/get-started/?from=blog) *Lissa is not a medical device; talk with a clinician about any health concern.*