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Dr. Maria P. Velez MD, PhD, FRCSC
Dr. Maria P.  Velez
Associate Professor
Contact Info
613-549-6666 x8199
Social Media

Current Appointment:

Clinician Scientist

Division Chair, Reproductive Endocrinology and Infertility

Research Interests:

Reproductive endocrinology and Infertility, Endocrine Disruptors 


Other Interests:


Book Chapters

Vélez MP, Kadoch IJ, Phillips S, Bissonnette F. One plus one equals two at once: the importance of presenting cumulative pregnancy rates as the ideal outcome in eSET programs. In E. Scott Sills (Ed.), Transferring the Single Euploid Embryo: Molecular Genetics in Reproductive Medicine. Switzerland: Springer. 2015.

Vélez MP, Monnier P, Foster W, Fraser WD. The impact of phthalates on women’s reproductive health. In D. Scott (Ed.), Our Chemicals Selves: Gender, Toxics, and Environmental Health. Vancouver: University of British Columbia Press. 2015.

Monnier P, Vélez MP, Forges T. IVF and Perinatal Outcomes. In J Lafond & C Vaillancourt (Eds.), Pregnancy disorders and perinatal outcomes. Bentham Science Publishers. 2012.


Journal Articles


Lodge-Tulloch N, Elias F, Pudwell J, Walker M, Gaudet L, Smith GN, Velez MP. Caesarean Delivery in Pregnancies Conceived by Assisted Reproductive Technology: A Systematic Review and Meta-analysis. Accepted, BMC Pregnancy and Childbirth, 2021 

Flemming JA, Velez MP. The ART of medicine: Counselling women with liver disease about assisted reproductive technology. Editorial, In press, Journal of Hepatology.

Velez MP, Richardson H, Baxter NN, Greenblatt E, Barr R, Green M. Risk of Infertility in female adolescents and young adults with cancer: a population-based cohort study. Human Reproduction, February 21, 2021

Brogly SB, Velez MP, Werler MM, Li W, Camden A, Guttmann A. Prenatal opioid analgesics and the risk of adverse birth outcomes. Epidemiology, February 19, 2021

Price M, Alvarado B, Rosendaal N, Da Camara S, Pirkle C, Velez MP. Early and surgical menopause associated with higher Framingham Risk Scores for Cardiovascular Disease in the Canadian Longitudinal Study on Aging. Menopause, Vol. 28, No. 5, 2021


Bougie O, Pudwell J, McClinton C, Brogly S, Velez MP. Characterization of Endometriosis Surgery Patterns in Ontario: A Population-Based Cohort Study. Acta Obstet Gynecol Scand. 2020 Dec 27

França A, Pirkle C.M, Sentell T, Velez MP, Domingues MR, Bassani DG, da Câmara SM. Evaluating health literacy among adolescent and young adults pregnant women from a lowincome area of northeast Brazil. Int. J. Environ. Res. Public Health 2020, 17(23), 8806

Ding A, Guerin A, Lujan M.E, Velez MP. Polycystic ovary syndrome and incidental diagnosis of mosaic Turner Syndrome. EPub September 7, 2020. Journal of Obstetrics and Gynecology Canada. 

Coleman C, Pudwell J, McClinton C, Korkidakis A, Green M. Velez MP. Modest Increase in Fertility Consultations in Female Adolescents and Young Adults Diagnosed with Lymphoma: A population-based study. J Adolesc Young Adult Oncol. EPub August 20, 2020. 

Flemming JA, Mullin M, Lu J, Sarkar M, Djerboua M, Velez MP, Brogly S, Terrault NA. Outcomes of Pregnant Women With Cirrhosis and Their Infants in a Population-Based Study. Gastroenterology, 2020 Nov;159(5):1752-1762.e10

Gallo LG, Martinez-Cajas J, Peixoto HM, Esteves C, Carter JE, Mckeown S, Shaub B, Ventura CV, Araújo G, Pomar L, Ventura LO, Nerurkar VR, Araújo WN, Velez MP. Another piece of the Zika puzzle: assessing the associated factors to microcephaly in a systematic review and meta-analysis. BMC Public Health. 2020 Jun 1;20(1):827. 

Elias F, Weber-Adrian D, Pudwell J, Carter J, Gaudet L, Walker M, Smith G, Velez MP. Neonatal outcomes in singleton pregnancies conceived using Fresh versus Frozen embryo transfer compared to spontaneous conceptions: a systematic review and meta-analysis. Arch Gynecol Obstet. 2020 May 22. Online ahead of print.

Velez MP, Slater M, Griffiths R, Shah BR, Sutherland R, Jones C, Jacklin K, Walker JD, Green ME. Diabetes during pregnancy and perinatal outcomes among First Nations women in Ontario, 2002/03–2014/15: a population-based cohort study. CMAJ Open. March 19, 2020 vol. 8 no. 1 214-225.

Simon A, Pratt M, Hutton B, Skidmore B, Rybak N, Corsi DJ, Walker M, Velez MP, Smith GN, Gaudet LM. Guidelines for the management of pregnant women with obesity: a systematic review. Obes Rev. 2020 Mar; 21(3):e12972.

Bougie O, Velez MP. The impact of socioeconomic deprivation on pregnancy and delivery rates after IVF. BJOG. 2020 Mar; 127(4):466.

Velez MP, Pirkle C. In Response. Menopause. 2020, Feb; 27(2):250.


Gubert P, Pudwell J, Van Vugt D, Reid RR, and MP Velez. Number of motile spermatozoa inseminated and pregnancy rates in intrauterine insemination. Fertility Research and Practice. 2019, Sep; 5(10). 

Velez M, Rosendaal N, Alvarado B, Camara S, Belanger E, Richardson H, Pirkle C. Age at natural menopause and physical functioning in postmenopausal women: The Canadian Longitudinal Study on Aging. Menopause. 2019, Sep; 26(9):958–965 

Nguyen T-V, Jutras B, Monnier P, Muckle G, Velez M, Dodds L, Arbuckle TE, St-Amour D. Prenatal Masculinization of the Auditory System in Infants: The MIREC-ID Study. 2019 Jun;104:33-41. Psychoneuroendocrinology.

Sentell T, da Câmara SM, Ylli A, Velez MP, Domingues MR, Bassani DG, Guo M, Pirkle C.M. Data gaps in adolescent fertility surveillance in middle-income countries in Latin America and South Eastern Europe: Barriers to evidence-based health promotion. The South Eastern European Journal of Public Health (SEEJPH) 2019, Vol. 11.

Velez MP, Alvarado B, Rosendaal N, da Camara S, Belanger E, Pirkle C. Data on the association between age at natural menopause and physical function in older women from the International Mobility in Aging Study (IMIAS). Data in Brief, Volume 23, April 2019, 103811.

Korkidakis A, Lajkosz K, Green M, Velez MP. Patterns of referral for gynecologic counselling among female Adolescents and Young Adults (AYAs) with breast cancer: A population-based cohort study. J Adolesc Young Adult Oncol. 2019 Apr 1; 8(2): 197–204.

Velez MP, Alvarado B, Rosendaal N, da Camara S, Belanger E, Pirkle C. Age at natural menopause, grip strength and gait speed in older women from Albania, Canada, Brazil and Colombia. Maturitas 2019 April; 122: 22–30.

Nguyen TV, Monnier P, Muckle G, Velez, MP, Dodds L, Arbuckle TE. Exposure to Androgens and Estrogens in Utero and Relationship with Anthropometric Measures in Human Infants: MIREC-ID study. Journal of Developmental Origins of Health and Disease. 2019 Mar 22:1-9.

Velez MP, Hamel C, Hutton B, Gaudet G, Walker M, Thuku M, Cobey K, Pratt M, Smith G. Care Plans for Women Pregnant using Assisted Reproductive Technologies: Systematic Review. Reprod Health. 2019 Jan 29;16(1):9.

Li N, Chen A, Lanphear B, Ouellet E, Muckle G, Séguin J, Braun J, Yolton K, Dodds L, Vélez MP, Boivin M, Arbuckle T, Fraser W. Associations of Cord Blood Leptin and Adiponectin with Children’s Cognitive Abilities. Psychoneuroendocrinology 2019 Jan; 99:257-264.


Shere M, Arbuckle T, Monnier P, Fraser W, Velez MP. Time-to-Pregnancy and offspring finger-length ratio (2D:4D). Am J Hum Biol. 2018 Nov;30(6):e23176.

Dayan N, Fell D, Guo M, Wang W, Velez MP, Spitzer K, Laskin C. Severe maternal morbidity in women with high BMI in IVF and unassisted singleton pregnancies. Human Reproduction. 2018 Aug 33; (8) 1548–1556.

Davidson-Urbain W, Jouvet P, Velez MP, Ayotte P, Monnier P. Exposure to Phthalates of Critically Ill Children: a Pilot Single Center Study. Biomedical Journal of Scientific & Technical Research, 2018 Jul 6; (2) 5124 - 5129.


Duarte E, Garcia L, Araujo W, Velez MP. Outcomes of Zika virus infection during pregnancy: contributions to the debate on the efficiency of cohort studies. BMC Public Health, 2017 Dec 17: 924.

Rosendaal N, Alvarado B, Wu Y, Velez MP, Camara S, Pirkle C. Adolescent childbirth is associated with greater Framingham Risk Scores for cardiovascular disease among participants of the International Mobility in Aging Study. Journal of the American Heart Association, 2017 Nov 1;6 (11).

Bermudez-Tamayo C, Fernández Ruiz E, Pastor Moreno G, Maroto-Navarro G, Garcia-Mochon L, Perez-Ramos FJ, Caño-Aguilar A, Velez MP. Barriers and enablers in the implementation of a program to reduce cesarean deliveries. Reproductive Health, 2017 Aug 14 (1): 160.

Velez MP, Arbuckle T.E, Monnier P, Fraser W.D. Is maternal smoking associated with 2D:4D digit ratio in their children? Journal of Developmental Origins of Health and Disease, 2017 May 23:1-7.



Velez MP, Arbuckle T.E, Monnier P, Fraser W.D. Female digit length ratio (2D:4D) and Time to Pregnancy. Human Reproduction, 2016 Sep; 31 (9): 2128-34.

Velez MP, Arbuckle T.E, Fraser W.D, Mumford SL. Perfluoroalkyl acids and Time-to-Pregnancy: the issue of “parity-conditioning bias”. Environmental Research. 2016 May, 147: 572–573.



Shaulov T., Vélez M.P., Buzaglo K., Phillips S., Kadoch I.J.  Outcomes of 1503 cycles of modified natural cycle in vitro fertilization: A single institution experience. Journal of Assisted Reproduction and Genetics. 2015 Jul;32(7):1043-8.

Vélez MP, Arbuckle T.E, Fraser W.D. Female exposure to phenols and phthalates and time to pregnancy: the Maternal-Infant Research on Environmental Chemicals (MIREC) Study. Fertil Steril. 2015 Apr;103(4):1011-1020.

Vélez MP, Arbuckle T.E, Fraser W.D. Maternal Perfluorinated Chemicals and Reduced Fecundity: The MIREC Study. Hum Reprod. 2015 Mar;30(3):701-9.


Vélez MP, Connolly M, Kadoch IJ, Phillips S, Bissonnette F. Universal coverage of IVF pays off. Hum Reprod. 2014 Jun; 29 (6):1313-9.

Lehmann P, Vélez MP, Saumet J, Lapensée L, Bissonnette F, Kadoch IJ. Anti-müllerian hormone (AMH): a reliable biomarker of oocytes quality in IVF. Journal of Assisted Reproduction and Genetics, 2014 Apr; 31(4):493-8.


Arbuckle TE, Fraser WD, Fisher M, Davis K, Liang CL, Lupien N, Bastien S, Velez MP, et al. Cohort Profile: The Maternal-Infant Research on Environmental Chemicals (MIREC) Research Platform. Paediatr Perinat Epidemiol. 2013 Jul; 27(4):415-25.

Vélez MP, Kadoch IJ, Phillips S, Bissonnette F. Rapid policy change to single-embryo transfer while maintaining pregnancy rates per initiated cycle. Reproductive BioMedicine Online, 2013 May; 26(5): 506-11.


Jamal W, Vélez MP, Zini A, Phillips S, Hemmings R, Kadoch IJ. Surgically retrieved spermatozoa versus ejaculated spermatozoa in modified natural IVF-ICSI cycles. Reproductive BioMedicine Online, 2012 Sep; 25(3): 242-7.


Hormaza MP; Cuesta D; Martínez LM; Massaro MM; Campo, MN; Vélez MP; Rendón GJ; Agudelo CA. 25-hydroxy vitamin D serum levels in no menopausal, menopausal and postmenopausal women. Revista Colombiana de Obstetricia y Ginecología. 2011 Jul-Sep 62(3):231-236.

Van Hulst A, Seguin L, Zunzunegui MV, Velez MP, Nikiema B. The influence of poverty and social support on the perceived health of children born to minority migrant mothers. Ethnicity & Health. 2011 Jun;16(3):185-200.


Vélez MP, Alvarado BE, Lord C, Zunzunegui MV. Life Course Socioeconomic Adversity and Age at Natural Menopause in Women from Latin America and the Caribbean. Menopause. 2010 May-Jun; 17(3):552-9.

Vélez MP, Santos IS, et al. Maternal birthweight and adverse perinatal outcomes: The 1982 Pelotas birth cohort study, Brazil. Pan American Journal of Public Health. 2009 Aug; 26(2):112-119.

Barros FC, Vélez MdelP. Temporal trends of preterm birth subtypes and neonatal outcomes. Obstet Gynecol. 2006 May; 107(5):1035-41.

Vélez-Gómez MP, Barros FC, Echavarría-Restrepo LG, Hormaza-Angel MP. Low birth weight prevalence and associated maternal factors at the Bolivariana teaching hospital’s Maternal and Infant Protection and Attention Unit in Medellín, Colombia. Revista Colombiana de Obstetricia y Ginecología. 2006, 57 (4). 


All Departmental Publications