There are many suspicious hypotheses that are well known to the public. “Male / Female Brain” is one of these thoughts yet to be proven.
Most men are braver than women, and most women are delicate than men. Men are superior to women in evaluating the objective situation, while women are good at reading the mind. Men are more aggressive than women. But are they true? If so, are then driven by the difference in the brain structure?
Some people are strongly opposing to this kind of idea. They claim that the gender difference is only attributable to the nurture. Women are taught to play a subsidiary role in their childhood. It makes women difficult to flourish in the society.
This issue is often discussed as so-called Nature vs. Nurture problem. In the modern world, it is deemed as a taboo to insist that men are superior to women in the brain activity. Such a statement is sometimes seriously criticized by feminists.
A recent study denied the difference of gender in the brain. Lise Eliot concluded that the hippocampus was the same size in both men and women, based on a meta-analysis of over 6,000 MRI scans.
Wired.co.uk: There is probably no such thing as a 'male' and 'female' brain
Meta-analysis is a strategy to integrate multiple studies in the same theme. It provides us more reliable evidence than any single study. According to this study, there is no reason we should consider the volume of the hippocampus is different in gender. The hippocampus is an area of the brain which is considered as a storage of memory. Previously, women were believed to be superior to men in episodic memory. The wife remembers the fact that the husband forgot their wedding anniversary for some decades. But it is not because of the hippocampus.
This study has only proven an aspect of the gender equality in the brain. There are many other regions in the brain to be investigated, and most of them are unclear regarding their function. I do not think that there are absolutely same between male and female in the brain structure and function.
Also, it is another issue how to live as a man or woman, or other genders. The brain is not decisive upon your lifestyle.