The other side of the ledger: more than half of people with depression worldwide get no treatment
A World Health Organization review of 37 studies put the median share of people with major depression who receive no treatment at 56%. Any account of oversold conditions has to hold that number too.
We have not finished checking this source. No judgement either way. how we score evidence
Caveat on this rating: Treatment gap figures depend on survey instruments that define who counts as a case, and critics argue those instruments over-count distress as disorder, especially across cultures. The 2004 data are old and coverage has changed. The row uses the figure for what it measures, people meeting survey criteria who received no care, and does not claim all of them need medication.
It is easy to read the rows beside this one and conclude that the problem with mental health care is too much of it. The best evidence says the larger problem, across the world, is too little.
Significant findings
In 2004 a team writing in the Bulletin of the World Health Organization reviewed community surveys that used standard diagnostic interviews and asked a plain question: of the people who meet criteria for a disorder, what share received no care at all? Thirty seven studies had the data.
The median untreated share was 32.2% for schizophrenia and related psychosis, 56.3% for major depression, 50.2% for bipolar disorder, 57.5% for generalised anxiety disorder, and 78.1% for alcohol abuse and dependence. The authors call the gap "universally large" and say their figures are probably too low, because poorer countries with the fewest services had the fewest surveys.
Why it belongs here
Marketing that expands a diagnosis and neglect that leaves severe illness untreated are not opposites. They happen in the same system, often to different people. A campaign can sell a medicine to someone with a passing low mood in one city while someone with psychosis in another has no clinic to go to. Knowing about the first is not a reason to dismiss the second.
There is a serious argument on the other side of this, too. The psychiatrist Derek Summerfield has argued in the BMJ that Western definitions of disorder cannot simply be applied to other cultures, and that counting "untreated cases" assumes the categories travel. We name that argument and have not read its full text, so we do not summarise it further.
What this does not show
A treatment gap counts people who got no care. It does not say the missing care should be a medicine.
Worth asking
Am I being offered more than I need, or is someone I know getting less than they need?
Source
The treatment gap in mental health care — Kohn R, Saxena S, Levav I, Saraceno B (2004)
How this was scored
- Study design
- not recorded
- Funding
- not recorded
- Published in
- not recorded
- Sample size
- not recorded
- Preregistered
- not recorded
- Conflicts disclosed
- not recorded
- Independent of proponent
- not recorded
- Retracted
- No
We have not finished checking this source, so there is no scoring to show yet. “We have not checked this yet” and “this is disputed” are different statements, so no scored band is shown rather than a low one.
Read the full scoring rubric, including what it can't tell you.
Published September 24, 2026.
Questions
How strong is the evidence behind this?
veisund rates this source "not yet assessed". We have not finished checking this source. No judgement either way. One caveat travels with that badge: Treatment gap figures depend on survey instruments that define who counts as a case, and critics argue those instruments over-count distress as disorder, especially across cultures. The 2004 data are old and coverage has changed. The row uses the figure for what it measures, people meeting survey criteria who received no care, and does not claim all of them need medication. The score is calculated from recorded facts about the source — study design, funding, publication venue, sample size, preregistration — not typed in by an editor.
What is the source for this?
The treatment gap in mental health care — Kohn R, Saxena S, Levav I, Saraceno B (2004). The full source is linked on this page so you can read it yourself.
Is this medical advice?
This is information to bring to your prescriber, not medical advice and not a reason to change anything on your own. Nothing here is an instruction to stop or reduce a medication. If you are in crisis, call or text 988.
This is information to bring to your prescriber, not medical advice and not a reason to change anything on your own. Nothing here is an instruction to stop or reduce a medication. If you are in crisis, call or text 988.