Peter Hajek is a British psychologist. He is professor of clinical psychology and director of the Wolfson Institute of Preventive Medicine's Tobacco Dependence Research Unit at Queen Mary University of London.[1] He is known for his research into smoking cessation,[2] including the effectiveness of electronic cigarettes for this purpose.[3]
Hajek received his PhD from Charles University in Prague in 1973. In 1982, he moved to England, where he joined the Institute of Psychiatry's Addiction Research Unit. He became a lecturer at Barts and The London School of Medicine and Dentistry in 1992, and became a professor there in 1998.[1]
Hajek is the author of over 250 peer-reviewed papers, and has helped develop treatments for people who are dependent on cigarette smoking.[4] He is known for his research into electronic cigarettes, which, he has said, are "at least as effective as nicotine patches" for smoking cessation in the context of minimum support.[5] In 2014, Hajek and other researchers published a paper criticizing a World Health Organization report on electronic cigarettes published earlier that year, which they said had made "misleading" assumptions. Hajek has told the BBC that "...the risks [of electronic cigarettes] are unlikely, some already proven not to exist, while the benefits are potentially enormous."[6] Also in 2014, Hajek co-authored a Cochrane review of the effectiveness of electronic cigarettes for smoking cessation; the review found limited evidence that they were effective for this purpose. Hajek described the results of this review as "encouraging".[7] In February 2019 he published "A Randomized Trial of E-Cigarettes versus Nicotine-Replacement Therapy" in the New England Journal of Medicine.[8] This study demonstrated that smokers who used e-cigarettes to help them quit were 83% more likely to have quit smoking at one year than those who used conventional nicotine replacement therapy. However, according to a review article by Hussein Traboulsi et al. in May 2020 Hajek's study also resulted in more smokers becoming dual users than succeeded in complete abstinence; "Nonetheless, the continued use of and dependence on nicotine and the creation of dual users were issues in this trial. Among participants with 1-year abstinence, 80% were still using e-cigarettes in the e-cigarette group and 9% were still using nicotine replacement in the nicotine replacement group 52 weeks later. Additionally, while 18% of the e-cigarette users achieved complete abstinence, 25% (110/438) became dual users of e-cigarettes and conventional cigarettes."[9]