“There is no unisex brain. Girls arrive already wired as girls, and boys arrive already wired as boys. Their brains are different by the time they’re born, and their brains are what drive their impulses, values, and their very reality.”
I purposely read The Male Brain first to get an understanding of my own perceptions, before delving into lands unknown.
And these lands unknown are even unknown to the females themselves. Females are slaves to their hormones, as much as males are slaves to their sex drive.
With the tides of the month, women have to deal with hormone levels that go up and down, and basically affect their entire reality.
From feeling great, confident, secure, and healthy one day, to losing all hope, self-esteem, motivation, and even going into depression another day.
So understandably, women can be unpredictable, even to themselves.
Dr. Louann Brizendine is a neuropsychiatrist who has spent decades studying how hormones shape behaviour, and she lays it all out in a way that’s backed by research but still completely accessible. This isn’t a dry textbook — it reads more like a guided tour through the biology that quietly runs the show behind every argument and every “why did she just do that?” moment.
Threats and Stress Responses
The biggest threat to a male is losing territory, or being one-upped by another. The biggest threat to a female? To be ostracized from her social circle. Being kicked out from her little group of friends, family, or anyone she has an emotional bond with is the equivalent feeling of being left to die.
Under stress, males will engage in a “fight or flight” response, while females will try to communicate, bond, and cooperate with their stressful environment. This is an ancient response due to carrying babies, and not being able to run and hunt.
Think about that for a second. While the male brain is screaming “punch or run,” the female brain is wired to reach out and CONNECT. Brizendine calls this the “tend and befriend” response, and it’s driven by oxytocin — the bonding hormone. It’s why women are more likely to call a friend after a bad day while men are more likely to isolate. Neither is better or worse — just fundamentally different operating systems.
To be clear, the female brain is more complex, and goes through more variations than a male’s. At various stages in a female’s life, her brain and body is marinated in various hormones, and in varying quantities, thus affecting her realities DRASTICALLY during each phase.
The Female Brain Through Life
Baby girls are born being able to communicate more, and to pick up on body language and social nuances sooner than baby boys. They develop better anger suppression, gut feelings, and emotional memory (if it makes them feel good, they remember it).
As little girls, they socialize more with other girls, and occasionally with boys. Unfortunately, it’s hard to relate to boys, who do not express emotions as easily. A girl will get upset if she cannot read emotions from another person. This ability to read emotions is almost on par with being able to read a person’s mind. Hence, incongruency within a male or female is easy to detect when one thing is said, yet facial expressions tell a different story.
Upon hitting puberty, they become increasingly sensitive to emotions, stress, words, and sexual sensitivity. Sexual attractiveness, love, and avoiding parents become major issues.
Young women become centred around finding a mate, love, and career development. Apparently, decision-making matures faster in women. Emotions continue to mature as well.
Motherhood and Beyond
Pregnancy gives a woman fatigue, nausea, hunger, and complete protection of her foetus. Breastfeeding the baby only continues the fatigue and nausea.
After the baby is born, the female is completely centred around the baby’s protection. She can become a hostile gatekeeper to everyone around the baby, even to the father. Sex becomes a low priority to the mother.
Brizendine calls this the “mommy brain” — and it’s not an insult. The mother’s brain LITERALLY rewires itself during pregnancy and after birth. New neural circuits form to detect her baby’s cries, expressions, and needs. The father often feels shut out, but it’s not personal — it’s neurological.
Pre-menopause (a more recent phenomenon because people are living MUCH longer) — the woman is simply centred around surviving and dealing with her physical and emotional ups and downs. She slowly becomes less sensitive to estrogen, the female hormone. She becomes irritable, has fluctuating interests in sex, worries more, and has hot flashes.
Menopause and post-menopause cause the woman to focus more on staying healthy, and embracing new challenges. She becomes less interested in taking care of others, and starts doing what she wants to do. At this point, she becomes less reactive to stress and emotions.
Brizendine actually frames this last phase in a surprisingly empowering way. Once the hormonal fog lifts, women become more assertive, more focused on their own goals, and less driven by the need to please everyone around them. It’s almost like the brain finally says, “Alright, it’s YOUR turn now.”
Why This Matters
Here’s what I took away from all of this — understanding these biological drivers doesn’t make you a mind-reader, but it gives you a MASSIVE advantage in empathy. Whether you’re a man trying to understand your partner, a woman trying to understand herself, or just someone curious about why humans do what they do, this book delivers real answers.
I’ve read a lot of psychology and neuroscience books, and the ones that stick with me are the ones that change how I observe the world in real time. The Female Brain did that. After reading it, I started noticing patterns — in conversations, relationships, group dynamics — that I was completely blind to before.
Final Thoughts
So there you have it. Hormones are the key drivers here.
Finally, if a young female has a strong relationship with her father or a fatherly figure, she will grow up with more confidence and a higher self-esteem — mirroring her strong male figure’s actions.
Paired with The Male Brain, these two books give you a solid biological foundation for understanding the opposite sex. I’d recommend reading both back to back — they complement each other perfectly and together paint a complete picture of the hormonal forces running our lives behind the scenes.
Read for the necessity of understanding the female brain. 4/5
Thanks for reading.
— Leonidas
