University of California San Francisco
Helen Diller Family Comprehensive Cancer Center
Gideon St. Helen, PhD

Gideon St. Helen, PhD

Assistant Professor, Department of Medicine, UCSF

Cancer Center Program Memberships

Tobacco Control

Education

Livingstone College, Salisbury, NC, B.S., 05/2006, Biology
University of Georgia, Athens, GA, Ph.D., 08/2011, Toxicology
University of California, San Francisco, CA, Postdoc, 12/2014, Tobacco Control and Research

Honors & Awards

  • 2003-2006
    Academic Gold Medal, Livingstone College
  • 2006
    Summer Bridge Fellow, University of Georgia
  • 2012
    Society for Research on Nicotine and Tobacco Travel Award
  • 2012
    Centers for Disease Control and Prevention (CDC) Top-Ten Research Article

Selected Publications

  1. Liakoni E, Nardone N, St Helen G, Dempsey DA, Tyndale RF, Benowitz NL. Effects of Nicotine Metabolic Rate on Cigarette Reinforcement. Nicotine Tob Res. 2020 Jul 16; 22(8):1419-1423.
    View on PubMed
  2. Jacob P, St Helen G, Yu L, Nardone N, Havel C, Cheung P, Benowitz NL. Biomarkers of Exposure for Dual Use of Electronic Cigarettes and Combustible Cigarettes: Nicotelline, NNAL, and Total Nicotine Equivalents. Nicotine Tob Res. 2020 Jun 12; 22(7):1107-1113.
    View on PubMed
  3. Harvanko AM, St Helen G, Nardone N, Addo N, Benowitz NL. Twenty-four-hour subjective and pharmacological effects of ad-libitum electronic and combustible cigarette use among dual users. Addiction. 2020 06; 115(6):1149-1159.
    View on PubMed
  4. Benowitz NL, St Helen G, Nardone N, Cox LS, Jacob P. Urine Metabolites for Estimating Daily Intake of Nicotine From Cigarette Smoking. Nicotine Tob Res. 2020 02 06; 22(2):288-292.
    View on PubMed
  5. St Helen G, Nardone N, Addo N, Dempsey D, Havel C, Jacob P, Benowitz NL. Differences in nicotine intake and effects from electronic and combustible cigarettes among dual users. Addiction. 2020 04; 115(4):757-767.
    View on PubMed
  6. St Helen G, Liakoni E, Nardone N, Addo N, Jacob P, Benowitz NL. Comparison of Systemic Exposure to Toxic and/or Carcinogenic Volatile Organic Compounds (VOC) during Vaping, Smoking, and Abstention. Cancer Prev Res (Phila). 2020 02; 13(2):153-162.
    View on PubMed
  7. Benowitz N, Nardone N, St Helen G, Addo N, Jacob P, Liakoni E, Jain S, Hooshfar S, Lynch K. Quantitative biochemical screening for marijuana use and concordance with tobacco use in urban adolescents. Drug Alcohol Depend. 2019 12 01; 205:107583.
    View on PubMed
  8. Liakoni E, St Helen G, Dempsey DA, Jacob P, Tyndale RF, Benowitz NL. Relationship between skin melanin index and nicotine pharmacokinetics in African American smokers. Drug Alcohol Depend. 2019 11 01; 204:107474.
    View on PubMed
  9. St Helen G, Benowitz NL, Ko J, Jacob P, Gregorich SE, Pérez-Stable EJ, Murphy SE, Hecht SS, Hatsukami DK, Donny EC. Differences in exposure to toxic and/or carcinogenic volatile organic compounds between Black and White cigarette smokers. J Expo Sci Environ Epidemiol. 2019 Aug 12.
    View on PubMed
  10. Nardone N, Helen GS, Addo N, Meighan S, Benowitz NL. JUUL electronic cigarettes: Nicotine exposure and the user experience. Drug Alcohol Depend. 2019 10 01; 203:83-87.
    View on PubMed
  11. Stroud L, Werner E, Matteson K, Carey M, Helen GS, Eissenberg T, Scott-Sheldon LAJ. Waterpipe (hookah) tobacco use in pregnancy: use, preferences and perceptions of flavours. Tob Control. 2020 02; 29(Suppl 2):s62-s71.
    View on PubMed
  12. St Helen G, Benowitz NL, Ahluwalia JS, Tyndale RF, Addo N, Gregorich SE, Pérez-Stable EJ, Cox LS. Black Light Smokers: How Nicotine Intake and Carcinogen Exposure Differ Across Various Biobehavioral Factors. J Natl Med Assoc. 2019 Oct; 111(5):509-520.
    View on PubMed
  13. Liakoni E, Edwards KC, St Helen G, Nardone N, Dempsey DA, Tyndale RF, Benowitz NL. Effects of Nicotine Metabolic Rate on Withdrawal Symptoms and Response to Cigarette Smoking After Abstinence. Clin Pharmacol Ther. 2019 03; 105(3):641-651.
    View on PubMed
  14. Elias J, Dutra LM, St Helen G, Ling PM. Revolution or redux? Assessing IQOS through a precursor product. Tob Control. 2018 11; 27(Suppl 1):s102-s110.
    View on PubMed
  15. St Helen G, Jacob Iii P, Nardone N, Benowitz NL. IQOS: examination of Philip Morris International's claim of reduced exposure. Tob Control. 2018 11; 27(Suppl 1):s30-s36.
    View on PubMed
  16. St Helen G, Eaton DL. Public Health Consequences of e-Cigarette Use. JAMA Intern Med. 2018 07 01; 178(7):984-986.
    View on PubMed
  17. St Helen G, Shahid M, Chu S, Benowitz NL. Impact of e-liquid flavors on e-cigarette vaping behavior. Drug Alcohol Depend. 2018 Aug 01; 189:42-48.
    View on PubMed
  18. Benowitz NL, Nardone N, Jain S, Dempsey DA, Addo N, St Helen G, Jacob P. Comparison of Urine 4-(Methylnitrosamino)-1-(3)Pyridyl-1-Butanol and Cotinine for Assessment of Active and Passive Smoke Exposure in Urban Adolescents. Cancer Epidemiol Biomarkers Prev. 2018 03; 27(3):254-261.
    View on PubMed
  19. Velicer C, St Helen G, Glantz SA. Tobacco papers and tobacco industry ties in regulatory toxicology and pharmacology. J Public Health Policy. 2018 Feb; 39(1):34-48.
    View on PubMed
  20. Havel CM, Benowitz NL, Jacob P, St Helen G. An Electronic Cigarette Vaping Machine for the Characterization of Aerosol Delivery and Composition. Nicotine Tob Res. 2017 Oct 01; 19(10):1224-1231.
    View on PubMed

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