Correlation Between Hemorrhoids/Fissures and Menstruation or Progesterone Pills
There is no established correlation between menstruation or progesterone-containing oral contraceptives and the development of hemorrhoids or anal fissures. The available evidence shows that pregnancy-related hormonal changes do not correlate with hemorrhoidal disease, and hormonal contraceptives are not identified as risk factors for these anorectal conditions.
Evidence Analysis
Hormonal Changes and Hemorrhoids
The most relevant prospective study examining this relationship found no association between hormonal changes (including progesterone) and the development of hemorrhoidal disease 1. This 2021 cohort study of 109 pregnant women measured serum levels of estrogen, progesterone, and relaxin throughout pregnancy and postpartum, finding that hemorrhoidal disease prevalence increased during pregnancy (11% first trimester to 36.2% one month postpartum), but this was significantly associated with constipation and prior hemorrhoid history—not hormonal fluctuations 1.
Receptor Expression Studies
A 2010 study examined estrogen and progesterone receptor expression in anal canal tissue, comparing premenopausal and postmenopausal women 2. The findings showed:
- Progesterone receptors in the internal anal sphincter: 41.2% in menstruating women vs 11.8% in postmenopausal women (not statistically significant, p=0.118)
- No significant differences in receptor expression related to menopausal status or age 2
While receptors are present, their existence does not establish a causal relationship between hormonal fluctuations and disease development.
Established Risk Factors
The evidence consistently identifies the actual risk factors for hemorrhoids and fissures 1, 3:
For Hemorrhoids:
- Constipation (significantly associated in both first and third trimesters, p=0.011 and p=0.022)
- Prior history of hemorrhoidal disease
- Age over 35 years
- Pregnancy itself (mechanical factors, increased intra-abdominal pressure)
For Anal Fissures:
- Constipation and hard stools
- Bowel disturbances 4
Contraceptive Guidelines
The 2024 U.S. Selected Practice Recommendations for Contraceptive Use makes no mention of hemorrhoids or anal fissures as contraindications, side effects, or considerations for progesterone-containing contraceptives 5. If there were a clinically significant association, this would be addressed in comprehensive contraceptive guidelines.
Clinical Implications
When evaluating patients with hemorrhoids or anal fissures:
- Do not attribute symptoms to menstrual cycle or hormonal contraceptives without first addressing the established risk factors
- Focus assessment on bowel habits (Bristol stool scale, constipation symptoms)
- Obtain history of prior anorectal disease
- Evaluate dietary fiber and fluid intake
Treatment should target the actual pathophysiology: constipation management with adequate fiber and water intake, not hormonal manipulation 6, 4.
Common Pitfall
The temporal association of symptom worsening during pregnancy leads to the misconception that hormones cause hemorrhoids. However, pregnancy involves multiple mechanical factors (increased intra-abdominal pressure, venous congestion, constipation from iron supplementation) that better explain the increased prevalence 1, 3.