Louisa Degenhardt

261.0k total citations · 36 hit papers
690 papers, 47.9k citations indexed

About

Louisa Degenhardt is a scholar working on Epidemiology, Public Health, Environmental and Occupational Health and Pharmacology. According to data from OpenAlex, Louisa Degenhardt has authored 690 papers receiving a total of 47.9k indexed citations (citations by other indexed papers that have themselves been cited), including 417 papers in Epidemiology, 314 papers in Public Health, Environmental and Occupational Health and 126 papers in Pharmacology. Recurrent topics in Louisa Degenhardt's work include Opioid Use Disorder Treatment (303 papers), Substance Abuse Treatment and Outcomes (257 papers) and HIV, Drug Use, Sexual Risk (216 papers). Louisa Degenhardt is often cited by papers focused on Opioid Use Disorder Treatment (303 papers), Substance Abuse Treatment and Outcomes (257 papers) and HIV, Drug Use, Sexual Risk (216 papers). Louisa Degenhardt collaborates with scholars based in Australia, United States and United Kingdom. Louisa Degenhardt's co-authors include Wayne Hall, Michael T. Lynskey, Harvey Whiteford, Matthew Hickman, Theo Vos, Alize J Ferrari, George Patton, Bradley Mathers, Richard P. Mattick and Sarah Larney and has published in prestigious journals such as The Lancet, SHILAP Revista de lepidopterología and PLoS ONE.

In The Last Decade

Louisa Degenhardt

670 papers receiving 46.2k citations

Hit Papers

Global burden of disease ... 2002 2026 2010 2018 2013 2017 2008 2017 2011 1000 2.0k 3.0k 4.0k
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Global burden of disease attributable to mental and substance use disorders: findings from the Global Burden of Disease Study 2010
    2013 4.3k citations Louisa Degenhardt et al. The Lancet profile →
  2. Mortality risk during and after opioid substitution treatment: systematic review and meta-analysis of cohort studies
    2017 1.3k citations Louisa Degenhardt et al. BMJ profile →
  3. Global epidemiology of injecting drug use and HIV among people who inject drugs: a systematic review
    2008 1.0k citations Louisa Degenhardt, Matthew Hickman et al. The Lancet profile →
  4. Global prevalence of injecting drug use and sociodemographic characteristics and prevalence of HIV, HBV, and HCV in people who inject drugs: a multistage systematic review
    2017 996 citations Louisa Degenhardt, Amy Peacock et al. The Lancet Global Health profile →
  5. Global epidemiology of hepatitis B and hepatitis C in people who inject drugs: results of systematic reviews
    2011 963 citations Holly Hagan, Louisa Degenhardt et al. The Lancet profile →
  6. Extent of illicit drug use and dependence, and their contribution to the global burden of disease
    2012 947 citations Louisa Degenhardt, Wayne Hall The Lancet profile →
  7. Adverse health effects of non-medical cannabis use
    2009 839 citations Wayne Hall, Louisa Degenhardt The Lancet profile →
  8. The Global Burden of Mental, Neurological and Substance Use Disorders: An Analysis from the Global Burden of Disease Study 2010
    2015 831 citations Louisa Degenhardt et al. profile →
  9. Cannabis use and mental health in young people: cohort study
    2002 740 citations Louisa Degenhardt, Michael T. Lynskey et al. profile →
  10. Global statistics on alcohol, tobacco and illicit drug use: 2017 status report
    2018 697 citations Amy Peacock, Janni Leung et al. Addiction profile →
  11. Mortality among regular or dependent users of heroin and other opioids: a systematic review and meta-analysis of cohort studies
    2010 635 citations Louisa Degenhardt, Matthew Hickman et al. Addiction profile →
  12. Global burden of disease attributable to illicit drug use and dependence: findings from the Global Burden of Disease Study 2010
    2013 623 citations Louisa Degenhardt, Wayne Hall et al. The Lancet profile →
  13. Addressing the burden of mental, neurological, and substance use disorders: key messages from Disease Control Priorities, 3rd edition
    2015 560 citations Louisa Degenhardt et al. The Lancet profile →
  14. HIV prevention, treatment, and care services for people who inject drugs: a systematic review of global, regional, and national coverage
    2010 535 citations Louisa Degenhardt, Matthew Hickman et al. The Lancet profile →
  15. Global patterns of opioid use and dependence: harms to populations, interventions, and future action
    2019 496 citations Louisa Degenhardt, Jason Grebely et al. The Lancet profile →
  16. A heavy burden on young minds: the global burden of mental and substance use disorders in children and youth
    2014 434 citations Louisa Degenhardt et al. profile →
  17. A synthesis of oral morphine equivalents (OME) for opioid utilisation studies
    2015 408 citations Suzanne Nielsen, Louisa Degenhardt et al. Pharmacoepidemiology and Drug Safety profile →
  18. The increasing global health priority of substance use in young people
    2016 387 citations Louisa Degenhardt, Emily Stockings et al. profile →
  19. The prognosis of common mental disorders in adolescents: a 14-year prospective cohort study
    2014 382 citations Louisa Degenhardt et al. The Lancet profile →
  20. The prevalence and burden of bipolar disorder: findings from the Global Burden of Disease Study 2013
    2016 368 citations Emily Stockings, Louisa Degenhardt et al. profile →
  21. Opiate substitution treatment and HIV transmission in people who inject drugs: systematic review and meta-analysis
    2012 359 citations Georgina J MacArthur, Silvia Minozzi et al. BMJ profile →
  22. Opioid use disorder
    2020 354 citations John Strang, Louisa Degenhardt et al. profile →
  23. Mortality among people who inject drugs: a systematic review and meta-analysis
    2013 347 citations Louisa Degenhardt, Matthew Hickman et al. profile →
  24. The Burden Attributable to Mental and Substance Use Disorders as Risk Factors for Suicide: Findings from the Global Burden of Disease Study 2010
    2014 340 citations Louisa Degenhardt et al. profile →
  25. Young adult sequelae of adolescent cannabis use: an integrative analysis
    2014 328 citations Louisa Degenhardt, Richard P. Mattick et al. profile →
  26. Association of Opioid Agonist Treatment With All-Cause Mortality and Specific Causes of Death Among People With Opioid Dependence
    2021 323 citations Thomas Santo, Matthew Hickman et al. profile →
  27. Cannabinoids for the treatment of mental disorders and symptoms of mental disorders: a systematic review and meta-analysis
    2019 296 citations Emily Stockings, Gabrielle Campbell et al. profile →
  28. Global, regional, and country-level coverage of interventions to prevent and manage HIV and hepatitis C among people who inject drugs: a systematic review
    2017 293 citations Sarah Larney, Amy Peacock et al. The Lancet Global Health profile →
  29. Cannabis and cannabinoids for the treatment of people with chronic noncancer pain conditions: a systematic review and meta-analysis of controlled and observational studies
    2018 293 citations Emily Stockings, Gabrielle Campbell et al. profile →
  30. Prevention, early intervention, harm reduction, and treatment of substance use in young people
    2016 289 citations Emily Stockings, Wayne Hall et al. profile →
  31. Effects of medication-assisted treatment on mortality among opioids users: a systematic review and meta-analysis
    2018 254 citations Louisa Degenhardt, Michael Farrell et al. profile →
  32. Public health implications of legalising the production and sale of cannabis for medicinal and recreational use
    2019 232 citations Wayne Hall, Michael T. Lynskey et al. The Lancet profile →
  33. New psychoactive substances: challenges for drug surveillance, control, and public health responses
    2019 216 citations Amy Peacock, Raimondo Bruno et al. The Lancet profile →
  34. Estimating the risk of suicide associated with mental disorders: A systematic review and meta-regression analysis
    2021 132 citations Louisa Degenhardt et al. profile →
  35. Epidemiology of injecting drug use, prevalence of injecting-related harm, and exposure to behavioural and environmental risks among people who inject drugs: a systematic review
    2023 109 citations Louisa Degenhardt, Samantha Colledge‐Frisby et al. The Lancet Global Health profile →
  36. The prevalence of gambling and problematic gambling: a systematic review and meta-analysis
    2024 61 citations Lucy Thi Tran, Samantha Colledge‐Frisby et al. profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Louisa Degenhardt Australia 102 22.3k 14.1k 9.8k 9.5k 7.3k 690 47.9k
Jürgen Rehm Canada 116 27.1k 1.2× 9.4k 0.7× 5.7k 0.6× 8.1k 0.8× 14.2k 1.9× 1.1k 58.1k
Wayne Hall Australia 108 17.9k 0.8× 9.7k 0.7× 14.7k 1.5× 8.2k 0.9× 8.7k 1.2× 1.1k 47.7k
Deborah S. Hasin United States 111 19.5k 0.9× 6.5k 0.5× 10.2k 1.0× 18.1k 1.9× 10.2k 1.4× 575 50.6k
Michael T. Lynskey United States 91 10.7k 0.5× 3.5k 0.2× 8.0k 0.8× 9.8k 1.0× 5.3k 0.7× 380 27.1k
Ali H. Mokdad United States 104 8.8k 0.4× 13.7k 1.0× 1.8k 0.2× 5.1k 0.5× 9.3k 1.3× 490 52.4k
Bridget F. Grant United States 115 22.1k 1.0× 5.4k 0.4× 6.3k 0.6× 22.1k 2.3× 10.5k 1.4× 362 54.0k
Richard P. Mattick Australia 61 9.4k 0.4× 7.7k 0.5× 2.2k 0.2× 4.4k 0.5× 2.2k 0.3× 297 20.6k
Thomas F. Babor United States 70 19.9k 0.9× 3.9k 0.3× 2.7k 0.3× 9.2k 1.0× 11.3k 1.5× 295 37.2k
Matthew Hickman United Kingdom 83 19.3k 0.9× 8.0k 0.6× 2.1k 0.2× 2.4k 0.3× 3.7k 0.5× 620 28.2k
A. Thomas McLellan United States 72 14.8k 0.7× 6.3k 0.4× 2.4k 0.2× 6.2k 0.7× 6.7k 0.9× 230 26.2k

Countries citing papers authored by Louisa Degenhardt

Since Specialization
Citations

This map shows the geographic impact of Louisa Degenhardt's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Louisa Degenhardt with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Louisa Degenhardt more than expected).

Fields of papers citing papers by Louisa Degenhardt

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Louisa Degenhardt. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Louisa Degenhardt. The network helps show where Louisa Degenhardt may publish in the future.

Co-authorship network of co-authors of Louisa Degenhardt

This figure shows the co-authorship network connecting the top 25 collaborators of Louisa Degenhardt. A scholar is included among the top collaborators of Louisa Degenhardt based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Louisa Degenhardt. Louisa Degenhardt is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Xiao, Bo, Krista J. Siefried, Nadine Ezard, et al.. (2025). Exploring experiences of talk therapies among gay and bisexual men seeking to reduce or abstain from using crystal methamphetamine in the context of chemsex. Drug and Alcohol Review. 44(3). 711–722. 3 indexed citations
2.
Santo, Thomas, Gabrielle Campbell, Samantha Colledge‐Frisby, et al.. (2024). Prevalence of comorbid substance use disorders among people with opioid use disorder: A systematic review & meta-analysis. International Journal of Drug Policy. 128. 104434–104434. 5 indexed citations
3.
Price, Olivia, Nicola Man, Rachel Sutherland, et al.. (2023). Disruption to Australian heroin, methamphetamine, cocaine and ecstasy markets with the COVID-19 pandemic and associated restrictions. International Journal of Drug Policy. 113. 103976–103976. 20 indexed citations
4.
5.
Costa, Juliana de Oliveira, Navya Baranwal, Natasa Gisev, et al.. (2021). Variations in Long‐term Opioid Therapy Definitions: A Systematic Review of Observational Studies Using Routinely Collected Data (2000‐2019). British Journal of Clinical Pharmacology. 87(10). 3706–3720. 8 indexed citations
6.
Larance, Briony, Marianne Byrne, Nicholas Lintzeris, et al.. (2020). Open-label, multicentre, single-arm trial of monthly injections of depot buprenorphine in people with opioid dependence: protocol for the CoLAB study. BMJ Open. 10(7). e034389–e034389. 14 indexed citations
7.
Strang, John, Rebecca McDonald, Gabrielle Campbell, et al.. (2019). Take-Home Naloxone for the Emergency Interim Management of Opioid Overdose: The Public Health Application of an Emergency Medicine. Drugs. 79(13). 1395–1418. 73 indexed citations
8.
Peacock, Amy, Raimondo Bruno, Paul Dietze, et al.. (2019). Australian Drug Trends 2019: Key findings from the National Ecstasy and Related Drugs Reporting System (EDRS) Interviews. UNSWorks (University of New South Wales, Sydney, Australia). 26 indexed citations
9.
Farrell, Michael, Natasha K. Martin, Emily Stockings, et al.. (2019). Responding to global stimulant use: challenges and opportunities. The Lancet. 394(10209). 1652–1667. 188 indexed citations
10.
Peacock, Amy, Monica J. Barratt, Raimondo Bruno, et al.. (2019). Engagement in drug checking ('pill testing') and behavioural responses by people who use drugs in Australia. UNSWorks (University of New South Wales, Sydney, Australia). 2 indexed citations
11.
McDonald, Rebecca, Traci C. Green, Suzanne Nielsen, et al.. (2017). A mapping review of take-home naloxone for people released from correctional settings. International Journal of Drug Policy. 46. 7–16. 23 indexed citations
12.
13.
14.
Degenhardt, Louisa, Amy Peacock, Samantha Colledge‐Frisby, et al.. (2017). Global prevalence of injecting drug use and sociodemographic characteristics and prevalence of HIV, HBV, and HCV in people who inject drugs: a multistage systematic review. The Lancet Global Health. 5(12). e1192–e1207. 996 indexed citations breakdown →
15.
Karanges, Emily A., Nicholas A. Buckley, Jonathan Brett, et al.. (2017). Trends in opioid utilisation in Australia, 2006‐2015: Insights from multiple metrics. Pharmacoepidemiology and Drug Safety. 27(5). 504–512. 40 indexed citations
16.
Larney, Sarah, Amy Peacock, Janni Leung, et al.. (2017). Global, regional, and country-level coverage of interventions to prevent and manage HIV and hepatitis C among people who inject drugs: a systematic review. The Lancet Global Health. 5(12). e1208–e1220. 293 indexed citations breakdown →
17.
Nielsen, Suzanne, Louisa Degenhardt, Bianca Hoban, & Natasa Gisev. (2015). A synthesis of oral morphine equivalents (OME) for opioid utilisation studies. Pharmacoepidemiology and Drug Safety. 25(6). 733–737. 408 indexed citations breakdown →
18.
Nielsen, Suzanne, et al.. (2014). Comparing opioids: A guide to estimating oral morphine equivalents (OME) in research. 294(6585). 1485–1485. 55 indexed citations
19.
MacArthur, Georgina J, Silvia Minozzi, Natasha K. Martin, et al.. (2012). Opiate substitution treatment and HIV transmission in people who inject drugs: systematic review and meta-analysis. BMJ. 345(oct03 3). e5945–e5945. 359 indexed citations breakdown →
20.
Degenhardt, Louisa, et al.. (2004). Estimating the size of a heroin using population after a marked reduction in heroin supply. Attention Perception & Psychophysics. 85(6). 1761–1767. 7 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by Jürgen Rehm Breakdown of academic impact, for papers by Wayne Hall Breakdown of academic impact, for papers by Deborah S. Hasin Breakdown of academic impact, for papers by Michael T. Lynskey Breakdown of academic impact, for papers by Ali H. Mokdad Breakdown of academic impact, for papers by Bridget F. Grant Breakdown of academic impact, for papers by Richard P. Mattick Breakdown of academic impact, for papers by Thomas F. Babor Breakdown of academic impact, for papers by Matthew Hickman Breakdown of academic impact, for papers by A. Thomas McLellan
Rankless by CCL
2026