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Del total de la muestra, 2.768 tuvieron cáncer de ovario. Las otras 6.274 no desarrollaron tal patología. Todas ellas tenían menos de 70 años. Las mujeres que había tomado siempre anticonceptivos orales tenían un riesgo un 34% inferior de desarrollar cáncer de ovario que las que no habían tomado tales fármacos. De estas últimas, un 13% tuvo cáncer de ovario, en comparación de un 9% de las que siempre tomaron el anticonceptivo.
Otro dato interesante fue el tiempo durante el cual utilizaron este método anticonceptivo. Las mujeres que tomaron el fármaco durante menos de cinco años presentaban un índice de reducción de riesgo del 15%. Para las que lo tomaron durante más de cinco años, la reducción de riesgo fue del 58%.
Según los investigadores, este metaanálisis confirma los efectos positivos de los anticonceptivos orales respecto al cáncer de ovario y, sobre todo, muestra que la protección dura durante mucho tiempo.
Webs Relacionadas
International Journal of Cancer
http://www3.interscience.wiley.com/
Instituto di Ricerche Farmacologiche Mario Negri
http://www.irfmn.mnegri.it/