Are solfeggio frequencies really ancient?

No. The specific numbers were proposed in the 1970s through a numerological reading of scripture and popularised in a 1999 book. The medieval hymn associated with them is real, but there is no evidence its notes matched those frequencies.

Is 432 Hz better for you than 440 Hz?

There is no reliable evidence that it is. A few small studies report slightly lower heart rate or reported anxiety at 432 Hz and others find no difference. Both tunings are human conventions, so listen to whichever you prefer.

Does any sound therapy have real research support?

Yes, in a limited way. Music-based interventions have consistent modest effects on anxiety and reported pain in medical settings, and vibroacoustic therapy has small positive findings for tension and pain. Neither depends on a specific magic frequency.

Can frequency healing treat addiction?

No. There is no evidence for that, and anyone claiming it should be treated with suspicion. Sound work can support relaxation and sleep, which help, but recovery relies on structure, honest relationships, skills practice, and appropriate professional support.

Is there any risk in trying it?

The practice itself is low risk for most people. The real risk is opportunity cost, meaning money spent on expensive equipment or sessions, or medical help delayed because someone believed sound alone was enough.

What is vibroacoustic therapy?

It is the delivery of low-frequency sound, roughly 30 to 120 Hz, through a mat, chair or bed so the body feels the vibration as well as hearing it. It has been studied for pain, muscle tension and anxiety with small positive results.

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Body, mind and the nervous system

Frequencyhealing and solfeggio frequencies: what the evidence says

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Some of this has research behind it. Most of the numbers you see online were invented in the 1970s. Here is how to tell the difference.

The short answer

In short

Frequency healing is the general term for using specific sound frequencies, most often the solfeggio set or 432 Hz tuning, with the aim of improving wellbeing. The measurable part is real but modest: music and low-frequency vibration can reduce reported anxiety and pain, and vibroacoustic therapy has been studied in clinical settings. The specific claims attached to individual frequencies, such as 528 Hz repairing DNA, have no scientific support. Treat frequency work as a relaxation practice, not as treatment for any condition.

Where solfeggio numbers came from: Proposed by Joseph Puleo in the 1970s, not from medieval music
Standard concert tuning: A = 440 Hz, adopted as an ISO standard in 1955
Best supported use: Music and vibration for anxiety and perceived pain
No support for: DNA repair, curing illness, treating addiction
Risk level: Low, with the main risk being delayed medical help

Published 2026-08-28 · All resources

What people mean by frequency healing

The term covers several different practices that get bundled together. There is listening to tones at specified frequencies through speakers or headphones. There is vibroacoustic therapy, where low-frequency sound is delivered through a mat or chair so you feel it in the body. There is tuning-fork work applied near or on the body. And there is the broader claim that everything has a resonant frequency that can be corrected.

Those are not equivalent. The first three have been studied to varying degrees. The last one is a metaphor that has been sold as physics.

Where the solfeggio numbers actually come from

The solfeggio set most often listed is 396, 417, 528, 639, 741 and 852 Hz. The story attached to them is that they are ancient tones from a medieval Latin hymn to John the Baptist, lost and then rediscovered.

The traceable history is narrower. The frequencies were put forward in the 1970s by Joseph Puleo, who described deriving them through a numerological reading of the Book of Numbers, and they were popularised in a 1999 book he co-authored. The medieval hymn is genuine and predates the numbers, but there is no historical evidence that its notes were tuned to those values, and standardised pitch measurement in Hertz did not exist at the time.

That does not automatically make the tones useless to listen to. It does mean the ancient provenance is a marketing story rather than a fact.

The 432 Hz question

You will see the claim that tuning music to A = 432 Hz rather than the standard 440 Hz makes it more natural, more harmonious with the body, or less stressful. Standard tuning at 440 Hz was formalised internationally in the mid twentieth century, and before that pitch varied widely by region and era, so there is nothing sacred about either number.

Blinded listening studies comparing 432 and 440 Hz have produced mixed and generally small results, with some reporting slightly lower heart rate and reported anxiety at 432 Hz, others finding no reliable difference. The difference between the two is about a third of a semitone, which most listeners cannot identify without a reference.

A fair reading is that if music at 432 Hz relaxes you, listen to it. There is no basis for claiming it is objectively healthier.

What does have research behind it

Two related areas hold up better than the frequency mythology.

Music-based interventions. Cochrane reviews of music interventions for anxiety in medical settings report consistent, modest reductions in anxiety and in reported pain. The effect is real, cheap and low risk, and it does not depend on any particular frequency.
Vibroacoustic therapy. Delivering low-frequency sound in the 30 to 120 Hz range through a mat or chair has been studied for pain, muscle tension and anxiety, including in palliative and rehabilitation settings, with small positive findings and small sample sizes.
Slow rhythmic sound and breathing. Sustained tones tend to slow the breath, and slowing the out-breath is one of the better documented ways to shift autonomic balance toward rest.

Claims to walk away from

Certain claims recur, and they are worth naming plainly, because a person in early recovery is a person being sold to.

That 528 Hz repairs DNA. This traces to a misreading of unrelated laboratory work and has no support.
That specific frequencies target specific organs or chakras with measurable physiological effect.
That frequency sessions treat addiction, depression, cancer or any diagnosed condition.
That equipment costing thousands is required. Headphones and a recording are the same intervention.
That withdrawing from a substance can be managed with sound. Withdrawal from alcohol or benzodiazepines can be dangerous and needs medical assessment.

A sensible position to hold

Sound and vibration are pleasant, safe for most people, and useful for practising a calm state on purpose. They belong in the same category as a hot bath, a long walk, or a good playlist: worth doing, not worth believing extraordinary things about.

At Halo Ridge, sound sessions sit alongside yoga, breathwork, exercise and time outdoors as part of the daily rhythm. They support the work. They do not replace group sessions, one-to-one support, or medical involvement where that is needed, and we do not present them as clinical treatment of any kind.

Common questions

Questions people ask about this

Are solfeggio frequencies really ancient?: No. The specific numbers were proposed in the 1970s through a numerological reading of scripture and popularised in a 1999 book. The medieval hymn associated with them is real, but there is no evidence its notes matched those frequencies.

Can frequency healing treat addiction?: No. There is no evidence for that, and anyone claiming it should be treated with suspicion. Sound work can support relaxation and sleep, which help, but recovery relies on structure, honest relationships, skills practice, and appropriate professional support.

Are solfeggio frequencies really ancient?: No. The specific numbers were proposed in the 1970s through a numerological reading of scripture and popularised in a 1999 book. The medieval hymn associated with them is real, but there is no evidence its notes matched those frequencies.

Can frequency healing treat addiction?: No. There is no evidence for that, and anyone claiming it should be treated with suspicion. Sound work can support relaxation and sleep, which help, but recovery relies on structure, honest relationships, skills practice, and appropriate professional support.

Is 432 Hz better for you than 440 Hz?: There is no reliable evidence that it is. A few small studies report slightly lower heart rate or reported anxiety at 432 Hz and others find no difference. Both tunings are human conventions, so listen to whichever you prefer.

Is there any risk in trying it?: The practice itself is low risk for most people. The real risk is opportunity cost, meaning money spent on expensive equipment or sessions, or medical help delayed because someone believed sound alone was enough.

Is 432 Hz better for you than 440 Hz?: There is no reliable evidence that it is. A few small studies report slightly lower heart rate or reported anxiety at 432 Hz and others find no difference. Both tunings are human conventions, so listen to whichever you prefer.

Is there any risk in trying it?: The practice itself is low risk for most people. The real risk is opportunity cost, meaning money spent on expensive equipment or sessions, or medical help delayed because someone believed sound alone was enough.

Does any sound therapy have real research support?: Yes, in a limited way. Music-based interventions have consistent modest effects on anxiety and reported pain in medical settings, and vibroacoustic therapy has small positive findings for tension and pain. Neither depends on a specific magic frequency.

What is vibroacoustic therapy?: It is the delivery of low-frequency sound, roughly 30 to 120 Hz, through a mat, chair or bed so the body feels the vibration as well as hearing it. It has been studied for pain, muscle tension and anxiety with small positive results.

Does any sound therapy have real research support?: Yes, in a limited way. Music-based interventions have consistent modest effects on anxiety and reported pain in medical settings, and vibroacoustic therapy has small positive findings for tension and pain. Neither depends on a specific magic frequency.

What is vibroacoustic therapy?: It is the delivery of low-frequency sound, roughly 30 to 120 Hz, through a mat, chair or bed so the body feels the vibration as well as hearing it. It has been studied for pain, muscle tension and anxiety with small positive results.

Where to read more

Next steps

What a sound bath actually is
How we approach recovery
Eating for repair: nutrition in the first year after alcohol or drug use
Appetite, blood sugar, protein and hydration in the first year of recovery, with a realistic week of meals and the reasons food changes how early sobriety feels.
The nutrients alcohol depletes, and how food rebuilds them
Thiamine, magnesium, B vitamins, zinc and vitamin D after heavy drinking: why levels fall, what symptoms look like, and which everyday foods restore them.

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