The Association Between Estrogen‐Containing Oral Contraceptive Pills and Hypothyroidism

<h3>Background</h3><p dir="ltr">Hypothyroidism is an endocrine disorder that affects 10 times more females than males, with substantial health impacts. The role of estrogen‐containing oral contraceptives (OCPs) in influencing thyroid function remains relatively underexplo...

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محفوظ في:
التفاصيل البيبلوغرافية
المؤلف الرئيسي: Lama Alkahlout (22392196) (author)
مؤلفون آخرون: Shahd Hamran (22392199) (author), Nour Darwish (22392202) (author), Yara Dweidri (22392205) (author), Giridhara R. Babu (9516785) (author), Rafif Mahmood Al Saady (22330120) (author)
منشور في: 2025
الموضوعات:
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_version_ 1864513537600126976
author Lama Alkahlout (22392196)
author2 Shahd Hamran (22392199)
Nour Darwish (22392202)
Yara Dweidri (22392205)
Giridhara R. Babu (9516785)
Rafif Mahmood Al Saady (22330120)
author2_role author
author
author
author
author
author_facet Lama Alkahlout (22392196)
Shahd Hamran (22392199)
Nour Darwish (22392202)
Yara Dweidri (22392205)
Giridhara R. Babu (9516785)
Rafif Mahmood Al Saady (22330120)
author_role author
dc.creator.none.fl_str_mv Lama Alkahlout (22392196)
Shahd Hamran (22392199)
Nour Darwish (22392202)
Yara Dweidri (22392205)
Giridhara R. Babu (9516785)
Rafif Mahmood Al Saady (22330120)
dc.date.none.fl_str_mv 2025-03-18T09:00:00Z
dc.identifier.none.fl_str_mv 10.1155/ije/5978558
dc.relation.none.fl_str_mv https://figshare.com/articles/journal_contribution/The_Association_Between_Estrogen_Containing_Oral_Contraceptive_Pills_and_Hypothyroidism/30306154
dc.rights.none.fl_str_mv CC BY 4.0
info:eu-repo/semantics/openAccess
dc.subject.none.fl_str_mv Biomedical and clinical sciences
Medical biochemistry and metabolomics
Reproductive medicine
Health sciences
Epidemiology
cross-sectional study
estrogen
hypothyroidism
oral contraceptive pills (OCP)
sex hormone-binding globulin (SHBG)
dc.title.none.fl_str_mv The Association Between Estrogen‐Containing Oral Contraceptive Pills and Hypothyroidism
dc.type.none.fl_str_mv Text
Journal contribution
info:eu-repo/semantics/publishedVersion
text
contribution to journal
description <h3>Background</h3><p dir="ltr">Hypothyroidism is an endocrine disorder that affects 10 times more females than males, with substantial health impacts. The role of estrogen‐containing oral contraceptives (OCPs) in influencing thyroid function remains relatively underexplored. This study investigated the association between estrogen‐containing OCP use and hypothyroidism in the female population in Qatar.</p><h3>Methods</h3><p dir="ltr">We utilized data from the Qatar Biobank to conduct a cross‐sectional study of 1001 female participants with a current or previous history of estrogen‐containing OCP use. The thyroid function of the participants was evaluated via thyroid function test parameters (thyroid stimulating hormone (TSH) and free tetraiodothyronine (fT4)) as outcomes, and sex hormone‐binding globulin (SHBG) levels as a proxy indicator of OCP use. We adjusted for confounders such as age, ethnicity, and type 2 diabetes mellitus status via multivariable logistic regression to determine the odds of hypothyroidism associated with SHBG levels.</p><h3>Results</h3><p dir="ltr">Among the 1001 participants, 34 (3.4%) met the diagnostic criteria for hypothyroidism. Multinomial logistic regression revealed no increased odds of hypothyroidism at the 90th percentile cutoff for SHBG levels (OR 1.00, 95% CI 0.29–3.50). However, at the 95th percentile of SHBG values, there was 46% higher odds of hypothyroidism (OR 1.46, 95% CI 0.33–6.54) and an over tenfold increase at the 99th percentile (OR 10.07, 95% CI 1.94–52.45, p = 0.006). Other variables, such as age, ethnicity, and diabetes status, were not associated with SHBG levels. Non‐Qatari Arabs had higher odds of hypothyroidism compared with that of Qataris (OR 8.06, 95% CI 0.84–77.54, p value 0.071).</p><h3>Conclusion</h3><p dir="ltr">This study offers evidence that SHBG levels can be used to indicate estrogen‐containing OCP use. Furthermore, higher SHBG levels are associated with higher odds of hypothyroidism among OCP users, and the odds of hypothyroidism vary across different ethnicities. These findings highlight the need for further research to explore the mechanisms linking OCP use to thyroid dysfunction and to investigate other potential risk factors.</p><h2>Other Information</h2><p dir="ltr">Published in: International Journal of Endocrinology<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1155/ije/5978558" target="_blank">https://dx.doi.org/10.1155/ije/5978558</a></p>
eu_rights_str_mv openAccess
id Manara2_fbb739a4fea51091aedfcd38985b9be5
identifier_str_mv 10.1155/ije/5978558
network_acronym_str Manara2
network_name_str Manara2
oai_identifier_str oai:figshare.com:article/30306154
publishDate 2025
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rights_invalid_str_mv CC BY 4.0
spelling The Association Between Estrogen‐Containing Oral Contraceptive Pills and HypothyroidismLama Alkahlout (22392196)Shahd Hamran (22392199)Nour Darwish (22392202)Yara Dweidri (22392205)Giridhara R. Babu (9516785)Rafif Mahmood Al Saady (22330120)Biomedical and clinical sciencesMedical biochemistry and metabolomicsReproductive medicineHealth sciencesEpidemiologycross-sectional studyestrogenhypothyroidismoral contraceptive pills (OCP)sex hormone-binding globulin (SHBG)<h3>Background</h3><p dir="ltr">Hypothyroidism is an endocrine disorder that affects 10 times more females than males, with substantial health impacts. The role of estrogen‐containing oral contraceptives (OCPs) in influencing thyroid function remains relatively underexplored. This study investigated the association between estrogen‐containing OCP use and hypothyroidism in the female population in Qatar.</p><h3>Methods</h3><p dir="ltr">We utilized data from the Qatar Biobank to conduct a cross‐sectional study of 1001 female participants with a current or previous history of estrogen‐containing OCP use. The thyroid function of the participants was evaluated via thyroid function test parameters (thyroid stimulating hormone (TSH) and free tetraiodothyronine (fT4)) as outcomes, and sex hormone‐binding globulin (SHBG) levels as a proxy indicator of OCP use. We adjusted for confounders such as age, ethnicity, and type 2 diabetes mellitus status via multivariable logistic regression to determine the odds of hypothyroidism associated with SHBG levels.</p><h3>Results</h3><p dir="ltr">Among the 1001 participants, 34 (3.4%) met the diagnostic criteria for hypothyroidism. Multinomial logistic regression revealed no increased odds of hypothyroidism at the 90th percentile cutoff for SHBG levels (OR 1.00, 95% CI 0.29–3.50). However, at the 95th percentile of SHBG values, there was 46% higher odds of hypothyroidism (OR 1.46, 95% CI 0.33–6.54) and an over tenfold increase at the 99th percentile (OR 10.07, 95% CI 1.94–52.45, p = 0.006). Other variables, such as age, ethnicity, and diabetes status, were not associated with SHBG levels. Non‐Qatari Arabs had higher odds of hypothyroidism compared with that of Qataris (OR 8.06, 95% CI 0.84–77.54, p value 0.071).</p><h3>Conclusion</h3><p dir="ltr">This study offers evidence that SHBG levels can be used to indicate estrogen‐containing OCP use. Furthermore, higher SHBG levels are associated with higher odds of hypothyroidism among OCP users, and the odds of hypothyroidism vary across different ethnicities. These findings highlight the need for further research to explore the mechanisms linking OCP use to thyroid dysfunction and to investigate other potential risk factors.</p><h2>Other Information</h2><p dir="ltr">Published in: International Journal of Endocrinology<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1155/ije/5978558" target="_blank">https://dx.doi.org/10.1155/ije/5978558</a></p>2025-03-18T09:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.1155/ije/5978558https://figshare.com/articles/journal_contribution/The_Association_Between_Estrogen_Containing_Oral_Contraceptive_Pills_and_Hypothyroidism/30306154CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/303061542025-03-18T09:00:00Z
spellingShingle The Association Between Estrogen‐Containing Oral Contraceptive Pills and Hypothyroidism
Lama Alkahlout (22392196)
Biomedical and clinical sciences
Medical biochemistry and metabolomics
Reproductive medicine
Health sciences
Epidemiology
cross-sectional study
estrogen
hypothyroidism
oral contraceptive pills (OCP)
sex hormone-binding globulin (SHBG)
status_str publishedVersion
title The Association Between Estrogen‐Containing Oral Contraceptive Pills and Hypothyroidism
title_full The Association Between Estrogen‐Containing Oral Contraceptive Pills and Hypothyroidism
title_fullStr The Association Between Estrogen‐Containing Oral Contraceptive Pills and Hypothyroidism
title_full_unstemmed The Association Between Estrogen‐Containing Oral Contraceptive Pills and Hypothyroidism
title_short The Association Between Estrogen‐Containing Oral Contraceptive Pills and Hypothyroidism
title_sort The Association Between Estrogen‐Containing Oral Contraceptive Pills and Hypothyroidism
topic Biomedical and clinical sciences
Medical biochemistry and metabolomics
Reproductive medicine
Health sciences
Epidemiology
cross-sectional study
estrogen
hypothyroidism
oral contraceptive pills (OCP)
sex hormone-binding globulin (SHBG)