Imagine a woman touching her breast and discovering a small lump. Behind that simple gesture, there is a world of science, prevention and courage. Breast cancer is the most commonly diagnosed cancer in women worldwide. Addressing risk factors, such as obesity, and adopting a healthy lifestyle are key strategies to prevent this disease. Epidemiological studies have shown that obesity significantly increases the modifiable risk of developing breast cancer, particularly after menopause, when adipose tissue becomes a real source of estrogen, which promotes the development of some forms of cancer. But this story must also be linked to the hard work of women scientists who, defying all barriers and prejudices, have given great help to research and treatment. They have demonstrated that being a woman and a scientist is not an exception, but a valuable force for progress. This article aims to offer a reflection on researchers who have dedicated themselves to ambitious projects channelling their passion at the service of science and women’s health and well-being.