Oral contraceptive side effects: where's the beef?

Area of Science:

• Reproductive Health
• Pharmacovigilance
• Women's Health

Background:

• Oral contraceptives are a widely used, effective form of contraception.
• Concerns persist regarding potential adverse effects associated with their use.
• Previous reports have listed numerous side effects, some of which may limit access to this method.

Purpose of the Study:

• To critically re-examine the evidence for alleged side effects of oral contraceptives.
• To assess the current scientific understanding of the safety profile of oral contraceptives.
• To provide a modernized perspective on oral contraceptive safety to inform clinical practice and policy.

Main Methods:

• Review of initial reports and subsequent investigations into oral contraceptive side effects.
• Analysis of the scientific literature concerning mood changes, libido, headaches, melanoma, gallbladder disease, liver tumors, sickle cell disease exacerbation, teratogenesis, post-Pill amenorrhea, atherogenesis, and carbohydrate tolerance.
• Evaluation of the causality and clinical significance of reported side effects.

Main Results:

• Many attributed cause-and-effect relationships between oral contraceptives and side effects are incorrect or highly improbable.
• Other reported side effects are clinically insignificant or exceedingly rare.
• The continued listing of unproven side effects acts as a barrier to oral contraceptive access.

Conclusions:

• A significant number of commonly cited oral contraceptive side effects lack robust scientific evidence.
• Revisiting and updating the safety profile of oral contraceptives is crucial.
• Modernized safety concepts can enhance informed decision-making and improve access to reliable contraception.