[Contraception in women with obesity]

Area of Science:

• Reproductive Health
• Endocrinology
• Thrombosis Research

Background:

• Obesity presents significant risks for unintended pregnancy and thromboembolic events (venous and arterial).
• Metabolic alterations and increased body mass in obese women may compromise hormonal contraceptive efficacy.
• Choosing appropriate contraception for obese women requires careful consideration of these health factors.

Purpose of the Study:

• To review and recommend contraceptive strategies for women with obesity.
• To evaluate the safety and effectiveness of different contraceptive methods in the context of obesity.
• To address contraceptive needs in women undergoing bariatric surgery.

Main Methods:

• Literature review and synthesis of current evidence on obesity and contraception.
• Analysis of risk factors associated with contraceptive use in obese populations.
• Consideration of hormonal and non-hormonal contraceptive options.

Main Results:

• Progestin-only contraceptives (pills, etonogestrel implant) and intrauterine devices are preferred for obese women.
• Combined estrogen-progestin contraceptives may be suitable for younger obese women without additional cardiovascular risks.
• Obesity itself does not appear to increase failure rates for most contraceptive methods.
• Post-bariatric surgery, especially after malabsorptive procedures like bypass, necessitates careful contraceptive selection due to potential oral contraceptive failure.

Conclusions:

• Contraceptive choices for obese women should prioritize safety and efficacy, favoring progestin-only methods or IUDs.
• Combined contraceptives can be considered cautiously in specific subgroups.
• Contraception management requires special attention following bariatric surgery, particularly to avoid oral methods if malabsorption is present.