A study conducted by the Agir pour le cœur des femmes foundation reveals that more than 40% of women using oestroprogestative contraception—a type of birth control that combines synthetic estrogen and progestogen—have cardiovascular risk factors that may make this method unsuitable for them. The foundation analyzed the medical records of 15,000 women aged 15 to 85 years through its mobile screening bus. When considering family history of cardiovascular issues, the percentage of women with these risk factors rises to nearly 60%. The study, published by the National Observatory of Women's Health (ONSF), found that 9 out of 10 women have at least two cardiovascular risk factors, and nearly two-thirds experience symptoms such as palpitations, shortness of breath, chest pain, or a general feeling of unwellness. Additionally, about 42% of the women are in a precarious situation, which limits their access to regular gynecological check-ups. The study warns that combined hormonal contraceptives can significantly increase the risk of stroke or heart attack, especially in women with conditions such as hypertension or obesity. The foundation states that for women who have migraines, smoke, and use synthetic estrogen, the risk of stroke is multiplied by 64. The study also notes that 8 out of 10 women do not have regular cardiovascular check-ups, even though more than a third have already experienced a cardiovascular event. In France, approximately 200 women die each day from cardiovascular disease, with one woman dying every 7 minutes. The foundation emphasizes that eight out of ten of these deaths are preventable. Through its mobile screening bus, which made 16 stops in 2025, the Agir pour le cœur des femmes foundation aims to address these issues by providing free cardiovascular and gynecological screenings. The foundation is calling for better education for both women and healthcare professionals, promoting alternative contraceptive methods such as progestin-only medications or intrauterine devices. The study also highlights the importance of psychosocial factors, noting that one out of five women reported experiencing physical or moral violence. This figure has increased from one in four in 2025, according to the study.