1- McGonagle KA, Kessler RC. Chronic stress, acute stress, and depressive symptoms. Am J community psychol 1990; 18(5): 681-706. 2- Bowman RE, Beck KD, Luine VN. Chronic stress effects on memory: sex differences in performance and monoaminergic activity. Hormones behav 2003; 43(1): 48-59. 3- LaDou J. Current Occupational & Environmental Medicine. 5ft ed. New York: MC GrowHill; 2014. 4- Aminian O. Stress on drivers. Tehran: Driver’s Occupational Health Seminar; 2005. [Persian] 5- Heitzer T, Schlinzig T, Krohn K, Meinertz T, Münzel T. Endothelial dysfunction, oxidative stress, and risk of cardiovascular events in patients with coronary artery disease. Circul 2001; 104(22): 2673- 6- Yudkin JS, Kumari M, Humphries SE, Mohamed-Ali V. Inflammation, obesity, stress and coronary heart disease: is interleukin-6 the link? Atherosclerosis 2000; 148(2): 209-14. 7- Abid M, Radi S. The relationship between occupational stress and cardiovascular disease risk factor. J Eur Heart 2007; 24: 1601-10. 8- Su CT, Yang HJ, Lin CF, Tsai MC, Shieh YH, Chiu WT. Arterial blood pressure and blood lipids as cardiovascular risk factors and occupational stress in Taiwan. Int J Cardiol 2001; 81(2-3): 181-7. 9- Niedhammer I, Goldberg M, Leclerc A, David S, Bugel I, Landre MF. Psychosocial work environment and cardiovascular risk factors in an occupational cohort in France. J Epidemiol Community Health 1998; 52(2): 93-100. 10- Jovanović J, Stefanović V, Stanković DN, Bogdanović D, Kocić B, Jovanović M, et al. Serum lipids and glucose disturbances at professional drivers exposed to occupational stressors. Cent Eur J Public Health 2008; 16(2): 54-8. 11- Osipow SH, Spokan AR. Manual for occupational stress inventory: research version. Psychological Assessment Resources, Odessa, FL, USA, 1998. 12- sharifian SA, Aminian O, Kiani M, Baruni Sh, AmiriF. The evaluation of the degree ofoccupational stress and factors influencing it inforensic doctors working in legal medicineorganization in Tehran. J Forens Med 2005; 12(3): 144-150. [Persian]. 13- Netterstrom B, Kristensen TS, Damsgaad MT, Olsen O, Sjol A. Job strain and cardiovascular risk factors. A cross-sectional study of employed Danish men and women. Br J Ind Med 1991; 48: 684-9. 14- Demiral Y, Soysal A, Can Bilgin A, Kiliç B, Unal B, Uçku R, Theorell T. The association of job strain with coronary heart disease and metabolic syndrome in municipal workers in Turkey. J Occup health 2006; 48: 332-8. 15- Aminian O, Farjami A, Pouryaghoob G, SadeghniiatHaghighi K. The evaluation of effect of job stress on the risk factors of the cardiovascular diseases among the drivers in Tehran in 86. TKJ 2011; 2(1): 26-33. [Persian] 16- YadegarfarGh, Alinia T, Gharaaghajiasl R, Allahyari T, Sheikhbagloo R. Study of association between job stress and cardiovascular disease risk factors: A cross sectional study among Urmia petrochemical company. IMSJ 2010; 28 (112): 665-680. [Persian] 17- Peter R, Alfredsson L, Knutsson A, Siegrist J, Westerholm P. Does a stressful psychosocial work environment mediate the effects of shift work on cardiovascular risk factors? Scandinavian J work, environment & health 1999; 25(4): 376-81. 18- kivimaki M, Leino-Arjas P, Luukkonen R, Vahtera J, Kirjonen J. Work stress and risk of cardiovascular mortality: prospective cohort stud of industrial employees. BMJ 2002; 325(7369): 857. 19- Saberi H, Moraveji A, Parastouie K. Metabolic syndrome among professional bus and truck drivers in Kashan, 2008. ISMJ 2009; 12(2): 126-32. [Persian] Assessment of occupational stress in taxi drivers and its relation with cardiovascular risk factors Farzane Rahimpour (MD) 1, Lida Jarahi (PhD) 2 , Ehsan Rafeemanesh (MD) 3, Atefe Taghati (MD) *4 1 Assistant professor, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran 2 Assistant professor, Addiction Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran 3 Assistant professor, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran 4 Resident of Occupational Medicine, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran Received: 22 Jan 2015 Accepted: 12 May 2015 Abstract Introduction: Occupational stress is caused by job itself or itchr('39')s related environment that leads to several somatic diseases such as cardiovascular disorders or psychosomatic diseases. This study aimed to evaluate the relation between stress level and some cardiovascular risk factors among taxi drivers. Method: This is a cross-sectional study on 330 taxi drivers. Demographic and occupational data and cardiovascular risk factors such as blood pressure, triglyceride, cholesterol, fasting blood sugar, smoking and body mass index were recorded in a check-list and standard Osipow questionnaire was used to score the stress level. ANOVA , Kruskal wallis and logestic regression test were used for data analysis and P- value less than 0.05 was considered as significant difference. Results: Mean Stress score and standard deviation were 167.24±65.12 that one hundred and forthy individuals(%42.4) were in low stress group, 61 individuals(%18.5) in low to moderate group, 22 individuals(%6.7) in moderate to severe group and 107 individuals(%32.4) in severe group. Comparing mean systolic and diastolic blood pressure, cholesterol, triglyceride, fasting blood sugar and BMI among four subgroups of stress revealed significant difference, but we didnchr('39')t observe any relation between smoking and stress score(P=0.88). The effect of stress on cholesterol and triglyceride and BMI after control of confounding factors (age, educathon, shift work and income) was significant (TG: p