I don’t doubt that women are underrepresented in medical research, but at the same time I suspect most medical research targets issues that affect both men and women, since that is true of most medical issues. The 7% statistic would be more impactful if we could compare it to the percentage of medical research focused on medical issues specific to men.
Edit: after further consideration, my initial take here isn’t great either, because women face more medical issues specific to their gender. I still think the 7% statistic is a little misleading.