Research Insights
HBOT Publication Trends: What the Literature Shows
9,401 hyperbaric oxygen therapy studies were indexed from PubMed between 2000 and 2025. Indexing peaked in 2025 with 631 studies.
The chart below tracks how many HBOT studies entered the indexed literature each year. Rising publication volume signals growing research attention, funding, and clinical interest, but volume alone is a bibliographic measure: it says how much has been published, not how strong the findings are. Read it alongside the study-types analysis, which shows the quality mix behind these counts.
This measures research activity, not effectiveness. A rising number of published studies means a topic is being investigated more; it does not mean outcomes have improved or that HBOT is appropriate for any particular patient. Counts reflect studies indexed in our database, which draws from PubMed.
Studies indexed per year, 2000-2025
Data generated August 14, 2026; updated weekly. How this data is produced.