Johanna Simin

Doctoral Candidate in Clinical Epidemiology

Johanna Simin

PhD student

Doctoral Candidate in Clinical Epidemiology

About me

Currently, I am a Doctoral Candidate in Clinical Epidemiology (PhD) at the Centre for Translational Microbiome Research at Karolinska Institutet in Stockholm. I received my main clinical training in Finland, most of my academic training in Sweden and I have gained a broad knowledge and understanding of clinical epidemiology, and a passion for women’s health.


My goal is to better understand the association of commonly prescribed drugs with cancer development. In specific, my research is focused on contemporary use of menopausal hormone therapy (MHT) and antibiotics on the risk of particularly sex hormone related cancers.

Research description

Most of my projects are based on large, nationwide and population-based databases. Data is linked to several National Board of Health and Welfare supervised health data registries, such as the Swedish Prescribed Drug Registry, Patient Registry (in- and outpatient care), Swedish Cancer Registry and Causes of Death Registry. 


Selected publications (as first author):

[PubMed ID: 32968205]. Simin J, Fornes R, Liu Q, Olsen R, Callens S, Engstrand L, Brusselaers N. Antibiotic use and the risk of colorectal cancer: a systematic review and dose-response meta-analysis. The British Journal of Cancer, 2020.

[PubMed ID: 32679181]. Simin J, Tamimi RM, Engstrand L, Callens S, Brusselaers N. Antibiotic use and the risk of breast cancer: A systematic review and dose-response meta-analysis. Pharmacological Research, 2020.

[PubMed ID: 31836528]. Simin J, Liu Q, Fornes R, Brusselaers N. Safety of proton pump inhibitors questioned based on a large randomized trial of patients receiving rivaroxaban or aspirin. Gastroenterology, 2019.

[PubMed ID: 31584190]. Simin J, Tamimi RM, Callens S, Engstrand L, Brusselaers N. Menopausal hormone therapy treatment options and ovarian cancer risk: A Swedish prospective population-based matched-cohort study. International Journal of Cancer, 2019.

[PubMed ID: 28783542]. Simin J, Tamimi R, Lagergren J, Adami HO, Brusselaers N. Menopausal hormone therapy and cancer risk: An overestimated risk? European Journal of Cancer, 2017. 


Other selected publications:

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