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Olympics: Science of gender* and it effects on athletes

The case of Algerian boxer Imane Khelif at the 2024 Paris Olympics has thrust the contentious issue of gender verification in sports into the global spotlight. Her victory over Angela Carini, who hastily withdrew from the match citing safety concerns, has ignited a fervent debate about the criteria for female participation in sports.

 

A Historical Overview of Gender Verification

The history of gender verification in sports is a complex tapestry woven with scientific advancements, societal attitudes, and ethical dilemmas.

  • Early 20th Century: Initial attempts to verify athletes' gender were primarily based on visual inspection, a method fraught with subjectivity and potential humiliation.

  • Mid-20th Century: The introduction of chromosomal testing, with XX designated as female and XY as male, marked a shift towards a more scientific approach.

  • Late 20th Century: Hormone testing, particularly focusing on testosterone levels, became the dominant method. Yet, this approach was also criticized for its arbitrary nature and potential to exclude athletes with naturally higher testosterone levels.

 

The Case of Imane Khelif

Imane Khelif's participation in the women's boxing category has been a lightning rod for controversy. Her previous disqualification from a world championship due to an unspecified gender eligibility test added fuel to the fire, it is alleged that the athlete is staging as a woman. While this need not be true, for the protocol at Olympics bestows a fair competition. This article illuminates the factors that affect biological sex.


While the International Olympic Committee (IOC) cleared her to compete, the case underscores the ongoing challenges in determining eligibility based on gender.

 

The Science of Sex and Gender

To comprehend the complexities of this issue, it's essential to differentiate between sex and gender.

  • Sex: Biological attributes assigned at birth, primarily based on chromosomes and reproductive organs.

  • Gender: Socially constructed roles, behaviors, identities, expressions, and characteristics of women, men, and gender-diverse people. For the sake of convention, these two terms will be interchangeably used in this article.


The concept of a binary sex system is a general case. Variations in sex development (DSD) occur, where individuals exhibit sex characteristics that don't conform to typical male or female patterns. These variations can involve chromosomes, hormones, or physical anatomy.


To understand the complexities of gender verification in sports, it's essential to delve into the scientific underpinnings of sex determination.


Chromosomal Sex: Typically, females have two X chromosomes (XX), while males have one X and one Y chromosome (XY). The Y chromosome contains the SRY gene, which initiates male development.

Hormonal Sex: Hormones play a crucial role in developing sex characteristics. Testosterone, often associated with male traits, is produced in larger quantities in males. However, females also produce testosterone, albeit in smaller amounts.

Phenotypic Sex: This refers to physical sex characteristics, including genitalia, body hair, and muscle mass. These are influenced by both genetics and hormones.

 

The Impact of Hormones on Athletic Performance

Hormones, particularly testosterone, have been linked to performance advantages in sports requiring strength and power. Testosterone, in particular, has been linked to increased muscle mass, bone density, and power output, factors often associated with athletic advantage. However, correlation does not equal causation, and the extent to which testosterone directly impacts athletic performance is still debated. Moreover, the relationship between hormone levels and athletic performance is complex and not fully understood. Factors such as training, nutrition, and genetics also play significant roles.

Additionally, focusing solely on testosterone ignores the complexities of the endocrine system and the potential impact of other hormones. For instance, oestrogen, often associated with female sex characteristics, also influences bone health and energy metabolism.

 

Variations in Sex Development (DSD)

Some individuals are born with variations in their sex characteristics, a condition known as Differences in Sex Development (DSD). These variations can involve chromosomes, hormones, or physical anatomy.


Individuals with DSD can face challenges in terms of gender identity and social categorization. In the context of sports, their inclusion has raised questions about fairness and competition.

 

The Challenge of Measurement

Accurately measuring hormonal levels to determine eligibility for women's sports is complex for several reasons:

  • Hormone Fluctuations: Hormone levels naturally fluctuate throughout a person's life and can be influenced by factors such as stress, diet, and sleep.

  • Threshold Values: Determining a specific testosterone level that constitutes an unfair advantage is arbitrary and lacks scientific consensus.

  • Ethical Considerations: Frequent hormone testing can be invasive and psychologically harmful.

 

Ethical and Societal Implications

The debate surrounding gender verification in sports raises profound ethical questions. Should athletes be categorized based on their biological sex, or should performance be the primary determinant?


Excessive focus on gender testing can lead to invasive procedures, psychological distress, and discrimination against athletes who do not conform to traditional gender norms. On the other hand, ensuring fair competition is a fundamental principle of sports.

The ideal approach to gender verification in sports is still evolving. While it's essential to ensure fair competition, it's equally important to promote inclusivity and respect for all athletes.


Ultimately, the goal is to create a sporting environment where all athletes can compete fairly and with dignity, regardless of their gender identity or physical characteristics.


Author: Juhi Kothary

Editor: Rohitashwa Kundu

Illustrator: Pranjal Sengupta


Note: The information presented in the above text is intended for educational purposes only. While it is emphasized as to not present individual opinions of the authors. Any such mention is purely figurative and does not represent HEIV's stance. Scientific facts are carefully scrutinized before they are published.

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