How can we possibly continue to make decisions based on information that excludes the majority of our population, half our workforce, two-thirds of our wealth holders, and nearly all of our spenders? The answer is we can’t—and we shouldn’t. That’s why it’s so important to create the kind of lasting change we all know is right, not just for women’s well-being, but for all of society. Gender bias in medical diagnosis harms peoples’ physical and mental health. It primarily affects women worldwide. This leads to a higher burden of illness amongst women. It is important for medical institutions and professionals to actively work to eliminate gender bias in medical diagnosis, as well as in research, workplace practices, and treatment protocols.