Lactivista is a compilation of different articles by Dr. Ibone Olza on breastfeeding. Some of them have been published in her blog, while others are being published for the first time in this book. In addition, she presents the results of updated reviews of the most important international scientific studies on breastfeeding: there is sufficient scientific evidence that synthetic intrapartum oxytocin severely affects breastfeeding, both in the mother and in the baby; and other studies confirm that the benefits of breastfeeding are greater the longer the duration of breastfeeding: the longer the duration, the healthier (also in the long term), the more empathy and the more intelligence. I have not found any rigorous study that demonstrates the harms of prolonged breastfeeding. On the contrary. The most rigorous scientific studies confirm that the benefits of breastfeeding are greater the longer the breastfeeding lasts. The longer the breastfeeding, the more defenses, the healthier, the more empathy and the more intelligence… Because naming scientific evidence is not to blame.