There has been a lot about trans women and women's sports in the news recently (and since one of the women's Olympic weight lifters this year will be a trans women, I expect that it will become even more in the spot light soon). I've been thinking about the topic a lot, and discussing it with a family friend who is trans (although female -> male, so it doesn't directly impact his situation I guess)
Long story short, I think that the current 'debate' about trans people and women's sport is mostly stupid. It seems to be pitting a bunch of transphobic people against people who are pro-trans rights but seem to have little grip on physiology. And I think there are a lot of reasonable people somewhere in the middle who aren't really being heard. Anyway, balancing trans right with the purpose of women's sport is a complicated topic and it gets people very riled up. If you try to remove emotion from the debate and break things down logically though, I think that there is a better way to approach the issue. This results in a few grey areas but mostly simple black and white rules that can be followed to both maximize the ability of trans women to compete as women while also keeping things fair for female athletes.
First, background. There are indisputable physiological differences between men and women. Given two athletes of the same size and training level, one male and one female, the guy will be stronger, carry more muscle mass, have denser bones, and have stronger tendons. This directly translates into sport - running faster, jumping higher, moving more weight. Men and women share the same genes and genetic makeup. The best current scientific explanation for the sexual dimorphism in humans is the effect of sex hormones on the body - predominantly testosterone vs estrogen (although a few others also play a role, these are the major ones).
OK, first tricky question. Why does women's sports exist at all? The name is kind of a misnomer- it has nothing to do with boobs and wieners. We need to think about it differently. Fundamentally, 'women's' sport exists to provide people with a different hormonal balance (and the physiological changes from this balance) a place to compete fairly against each other, so that they aren't all backbenched by people with more testosterone. And there is a huge, measurable difference that has been estimated as a benefit of between 10 and 50% (
https://link.springer.com/article/10.1007/s40279-020-01389-3) depending on the sport. Incidentally, this is also why testosterone is one of the most heavily regulated performance enhancing drugs in sport - it's a huge benefit for just about all athletic activity and confers an unfair advantage. Even when used by people who already have plenty of testosterone.
Tiny sidebar - Hold up GS! Doesn't skill matter in sport? Shouldn't a way more skilled person beat someone who's stronger? Absolutely! Floyd Mayweather is an incredibly skilled boxer, and was recently able to not only hold his own but also to win against a younger, taller, heavier, and stronger Logan Paul. However, raw strength and speed is a huge advantage in most things. We're talking about making sports fair here, and this means levelling the playing field so that someone who is hormonally disadvantaged doesn't need to be way more skilled than all the rivals in order to compete and hang in there.Trans women are at an interesting intersection here, in that sometimes they have the hormonal balance of men, and sometimes women depending on what stage they are at in their treatment. Trans men typically experience significant increase in musculature after undergoing hormone therapy (
https://pubmed.ncbi.nlm.nih.gov/31794605/) but nobody is complaining about trans men competing with men, so maybe we can leave that discussion for another day.
So given this, some thoughts in point form:
- Trans children before puberty should be allowed to play on whatever team they want. There is significantly less advantage pre-puberty as far as physiological differences go.
- Non-competitive high school and college sports post puberty should be open to whoever wants to play them. Trans women will have an advantage here, but at a non-competitive level, does that really matter? I believe that there is no reason to argue against inclusiveness here.
- No trans woman who has transitioned after puberty and has not completed hormone replacement therapy for an extended period should be allowed to compete in a competitive women's sport as a matter of fairness. The period of time should correspond to the period of time necessary for the hormonal advantage conferred by years of testosterone to disappear. This does not happen right away. Studies I've read indicate that typically after 12 months of hormone therapy, a trans women shows very minimal difference in muscle mass (
https://link.springer.com/article/10.1007/s40279-020-01389-3). Even three years after hormone replacement has been undergone, trans women are
still measuring higher than natural women for muscle mass (
https://bjsm.bmj.com/content/early/2021/02/28/bjsports-2020-103106). There obviously needs to be some sort of waiting time to ensure that fairness. This point is likely to change depending upon the sport in question. It is certainly dependent upon further research though, as there isn't enough that has been completed to say exactly what time this is*. I believe that it's unfair to allow trans women to compete until we know when they will be competing fairly here.
- Competitive sports post puberty in high-school should allow trans women only if hormonal treatment was started before puberty (this effectively means that they have never experienced hormonal benefits, so there's no need for a waiting period). The current practice in some places of allowing trans women who have recently transitioned to play competitive women's high school sport is extremely unfair to female athletes and should end.
- Women like Castor Semenya who are natural women with all the lady bits and identify as women, but are born with significantly higher than normal male growth hormone should be required to chemically reduce these levels in order to compete fairly in women's sport just as any trans woman would. This was a difficult position for me to accept, as I was previously holding on to the man/woman divide within women's sports rather than realizing that women's sport is largely about hormones and physiological changes from them, not being female.
- In similar vein, should natural born men with abnormally low levels of testosterone be allowed to compete in competitive women's sport? I'm unclear on this, again - more research is necessary.
*If research shows that there are permeant sporting advantages due to bone density/tendon strength from undergoing puberty as a male before transitioning, then obviously the viability of competitive sport for post-puberty transitioned women not acceptable without some other redress (and the redress may depend upon what advantage is shown and what sport is being competed in).
This is the big open ended question regarding trans women in high level competitive sport right now - determining how much advantage is conferred by transitioning post-puberty. We need more and better research to answer these open questions. If ignore this we allow trans women to compete with obvious physical advantages I believe that we are risking long term doing damage to both women's and trans sport. Women's sport will suffer as resentment over an unfair practice builds, trans sport will suffer as the transphobic will have real and very valid ammunition to use to argue against allowing trans women in sport at all.