There are things that women can do, and men can't.
There are things that men can do, and women can't.
But, why does this matter?
Because survival matters to us all.
A short thread on survival.
1/5
Men on average have more muscle mass, greater height, overall size, and physical strength, when compared with their genetic female counterparts.
It's the fundamental reason why in competitive sports such as the olympics, men outperform women by up to 20% or more.
2/5
Another physical difference between M+F becomes apparent with morbid mathematical certainty, every time famine strikes.
The Irish Potato Famine/Holodomor killed millions, yet more men succumbed to starvation than women.
Why did many more women survive?
Fat.
3/5
On average women have up to 40% more fat on their bodies than a similarly dimensioned man (height + weight). That means that women have more stored energy available to them in the form of fat.
Because in lean times, fat means the difference between survival and death.
4/5
Each sex is biologically unique.
Men are biologically built for physical strength.
And women are biologically built for survival. Because the survival of women means the survival of us all.
Why is the 'Gender Data Gap' in medicine dangerous?
Because the real data gap in medicine pertains to sex (M+F). So why are activists using 'gender', when the correct word in this case is 'sex'?
Sex is not gender.
A short thread on the importance of sex in medicine.
1/5
Right now the conflation in science between the words sex/gender has become so widespread that both words have lost their original meaning.
In describing the dimorphic immune response to viral infections like #COVID19, is it sex or gender?
2/5
When we speak about the mammalian female survival advantage that results in women outliving men everywhere around the world regardless of circumstances, isn't this sex?
Biological sex in mammals is binary (M/F). With all our advancements in genetics/medicine we currently have no way to change an individual's biological sex.
So why does this matter?
Because Medicine.
So, let's talk about sex.
A short thread.
1/5
Examples of Differences in Sex Development (DSD) or Intersex actually help us to better understand the two separate pathways of developmental trajectories of sex in mammals.
As individuals with intersex have expressed often, 'we're not a 3rd sex, we're female or male'.
2/5
As I wrote about in #TheBetterHalf, we continue to harm both sexes by ignoring the fundamental biological differences between them.
As twice as many males have unfortunately died from #COVID19 and twice the number of females have long-COVID.
Almost every type of cancer affects men more than women. And overall, more women survive a cancer diagnosis. Men also develop about 150,000 extra cancers per year in the US, compared to women.
Why is that?
Because biology.
2/7
We used to think that the reason for female cancer 'resistance' was behaviorally based because: women see their doctor more often and drink less alcohol etc.
Why are 95% of 'supercentenarians' (those who are 110 years of age and beyond) women?
Because biological sex.
And so, a short thread on sex and longevity.
1/7
From the beginning of life more girls make it their first birthday almost everywhere around the world, according to the @WHO. Girls have lower rates of prematurity and fewer complications after birth.
Females don't wait long to begin to dominate when it comes to survival.
2/7
Women are naturally resistant to cancer.
Throughout life, women not only develop less cancers in organs and tissues that they share with men, but even when they do, they're much more likely to survive them.
Note: this is the case even when we adjust for behavior.
The evolutionary arms race will never really end between microbes and humans. They (microbes) have as much to lose as we do if it does.
Microbes are responsible for some of the most profound differences between humans which we can still observe even today. This has been true since the first human.
Some humans are born able to naturally resist HIV. This is thanks to them inheriting a small but significant genetic change - CCR5 delta 32.