Tasmania’s gender law reforms, which prioritise self-identification over biological sex, are having profound and often unintended consequences for women and girls. These policies grant immediate access to female-only sports, change rooms, toilets, and services based solely on declared gender identity, without safeguards or consideration of measurable physical differences between male and female bodies.
While inclusion and respect for all individuals are essential, these reforms are creating systemic disadvantages for biological females in areas where sex-based protections were designed to ensure fairness, safety, and dignity. This is particularly evident in sports, where biological realities cannot be ignored.
The Myth of No Pre-Puberty Differences
A frequent justification for allowing biological boys to compete in girls’ categories from a young age is the claim that boys and girls perform equally before puberty. Scientific evidence consistently shows otherwise.
Even prior to puberty (typically around age 10–12), boys exhibit advantages in key athletic domains due to early androgen exposure (including prenatal and mini-puberty effects on testosterone). These include greater muscular strength, endurance, running speed, aerobic fitness, ball throwing, and kicking distance. Girls often excel only in flexibility.
Studies demonstrate these differences are small but significant—enough to influence competitive outcomes in primary school and youth sports:
- Atkinson et al. (2024): In elite U.S. youth track and field (ages 7–12), boys ran ~4–5% faster and jumped 5–7% farther/higher than girls in events like 100m–800m, long jump, and high jump. The gap widened sharply at ages 12–13 with male puberty.
- Brown (2026): In NSW (Australia) track competitions (ages 7–9), boys ran 3–6% faster across 70m–400m distances, aligning with U.S. data showing prepubertal male advantages in running.
- Nuzzo (2025 meta-analysis on upper/lower-limb strength): Boys were ~10% stronger overall pre-puberty (ages 5–10), rising to ~18% in upper limbs by ages 11–13.
- Nuzzo (2025 meta-analysis on grip strength): Boys consistently stronger from birth to age 16; grip strength differences small-to-moderate pre-puberty (girls ~90% of boys’ levels ages 3–10), widening dramatically post-puberty.
- Various reviews (e.g., ACPEDS, Women’s Sports Policy Working Group): Boys outperform in strength (up to 16–33% in upper-body metrics), speed (3–10%), and jumping (5–9%) from ages 6–12, with advantages in sprints, throws, and endurance tests.
These pre-pubertal edges—rooted in biology, not just training or activity levels—mean that allowing biological boys into girls’ categories disadvantages girls from the start, displacing them from wins, records, and progression opportunities.
Real-World Examples in Tasmania and Beyond
In one Tasmanian primary school (name withheld for legal reasons), a biological boy competed in girls’ events at a school sports carnival and won multiple races. A parent’s complaint to Minister Jo Palmer was met with a response that the Department of Education was simply following inclusion policies—highlighting how these rules prioritize identity over fairness.
This echoes cases elsewhere in Australia:
- An 11-year-old Victorian girl (granddaughter of Olympian Faith Leech) placed third in a regional school athletics event behind a trans-identified boy, missing finals qualification. Her appeal under inclusion guidelines for under-11s was rejected, sparking parliamentary debate on sex-based discrimination.
- In South Australia, a 13-year-old trans girl (biological male) broke multiple school records, including javelin by over 3 meters, prompting parental concerns over fairness.
Since these policies took effect, Women Speak Tasmania has heard from women in at least five community sports (soccer, netball, cycling, ten-pin bowling, lawn bowls) who feel uncomfortable or unfairly disadvantaged—often anonymously, due to fear of backlash. Many have self-excluded, undermining the mental health, social, and fitness benefits sport provides.
Safety and Fairness Beyond Competition
In contact sports like rugby or martial arts, retained male advantages (e.g., greater punch force, grip strength, frame size) heighten injury risks for females—even post-hormone therapy. Bodies like World Rugby, World Aquatics, and World Athletics have banned male-born athletes from women’s categories based on evidence.
In schools, Department of Education seminars (e.g., with Working It Out) suggest gender-neutral options or signage emphasizing respect in change rooms—yet imply girls’ discomfort could be seen as harassment. This forces compliance at the expense of girls’ privacy and dignity, while policies on binding overlook documented risks (e.g., pain, rib issues) without strong evidence of long-term benefits.
A Call for Balanced Policy
Sex-based categories exist because biological sex matters—in sport, safety, and opportunity. Reforms should protect women’s hard-won spaces without erasing biological reality. Inclusion must not come at the cost of fairness or force silence on legitimate concerns.
We need evidence-based policies that respect all while safeguarding girls and women: reinstating clear sex-based protections where strength, stamina, or physique is relevant, and considering alternatives like mixed/open categories.
Women and girls deserve spaces where they can compete, change, and belong without disadvantage or fear. Tasmania can lead by balancing kindness with truth and evidence.
Further Reading:
Gregory A. Brown, Brandon S. Shaw, Ina Shaw. Sex-based differences in running performance among children aged 7–9 years in new South Wales track competition. Available online 9 February 2026. –https://www.sciencedirect.com/science/article/pii/S2772696726000025
James L. Nuzzo. Sex Differences in Upper‐ and Lower‐Limb Muscle Strength in Children and Adolescents: A Meta‐Analysis. 05.04.2025 –https://pmc.ncbi.nlm.nih.gov/articles/PMC11971925
James L. Nuzzo. Sex Differences in Strength Prior to Puberty. Australians for Scientific Freedom. . 18.04.2025
The Australian. Uproar over Catholic School junior trans athlete’s record-breaking performances. 16.05.2025 – https://www.theaustralian.com.au/nation/uproar-over-catholic-school-junior-trans-athletes-recordbreaking-performances/news-story/6507721297aed3c65d4ffee1d56ec5e4 or archive link – https://archive.is/F3DwI
Sky News. Girl beaten by trans student in sports competition takes fight to Victorian parliament with help from Liberal MP Moira Deeming. 13.11.2025 – https://www.skynews.com.au/australia-news/politics/girl-beaten-by-trans-student-in-sports-competition-takes-fight-to-victorian-parliament-with-help-from-liberal-mp-moira-deeming/news-story/15b68bc39c7f2f682458620cc1bedc03
