The Unexpected Connection Between Estrogen and Autism | SciShow News video review

August 19, 2025
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The SciShow News video titled “The Unexpected Connection Between Estrogen and Autism” explores a study linking elevated levels of estrogen in the womb to a higher likelihood of developing autism, according to YouTube.

Key findings and insights

Study details: The study measured estrogen levels in amniotic fluid samples from the Danish Historic Birth Cohort, comparing 98 boys who later developed Autism Spectrum Disorder (ASD) to 177 boys who did not.
Correlation with autism: High levels of estrogen, specifically estradiol, estriol, and estrone, were associated with an increased likelihood of an autism diagnosis. Estradiol showed the most significant effect, says Neuroscience News.
Challenging prior assumptions: This finding adds to the prenatal sex steroid theory of autism, suggesting that it’s not solely linked to testosterone levels, and highlights the complex roles of hormones in brain development.
Estrogen’s role in brain development: Estrogen, particularly estradiol, plays a crucial role in brain development, influencing neuron formation, pruning, and the regulation of the neurotransmitter GABA. Atypicalities in these processes are seen in the brains of individuals with autism.
Placenta’s influence: The video suggests the placenta might play a role in regulating estrogen levels between the parent and fetus, and placental issues have been linked to an increased risk of autism, especially in male fetuses.
Limitations: The study focused solely on male fetuses due to limited samples for females, leaving the applicability of the findings to females unclear. The findings demonstrate a correlation, not a cause, and further research is needed to investigate potential contributing factors.

Video’s approach

SciShow’s video takes an evidence-based approach, exploring the scientific research on the topic.
It highlights the complexities of autism and aims for inclusivity in discussing its causes and implications.

In essence, the video reviews research suggesting that high estrogen levels during pregnancy may contribute to the likelihood of a child developing autism, urging a broader view of hormonal influences on brain development beyond traditional focus on testosterone.

Medical study and research from Princeton and other Universities

Here’s information regarding medical studies and research on the connection between estrogen and autism, including contributions from Princeton and other universities:

Research highlights

Estrogen and autism likelihood: A study conducted by researchers at Cambridge University and the State Serum Institute in Denmark, using samples from the Danish Historic Birth Cohort, found a link between exposure to high levels of estrogen (specifically estradiol, estriol, and estrone) in the womb and an increased likelihood of developing autism in boys. The University of Cambridge notes that estradiol was the most significant predictor. This research supports the prenatal sex steroid theory of autism, suggesting that it’s not solely about testosterone levels.
Princeton’s contribution: Princeton University researchers, in collaboration with the Simons Foundation and the U.S. National Institutes of Health, have been involved in autism genomics research, leading to the identification of four distinct subtypes of autism based on clinical and genetic data. These subtypes include:
- Social and Behavioral Challenges
- Mixed ASD with Developmental Delay
- Moderate Challenges
- Broadly Affected
Placental role: The Cambridge study suggests that the placenta might play a role in this connection, potentially regulating estrogen levels between the mother and fetus, according to Genetic Engineering and Biotechnology News.

Limitations and future directions

Study limitations: The Cambridge study on estrogen focused only on males due to limited samples for females, notes The University of Cambridge. The findings are correlational and do not establish a cause-and-effect relationship.
Princeton’s perspective: Princeton’s research emphasizes understanding the genetic underpinnings of autism for more targeted diagnoses and personalized care.
Ongoing research: Further research is needed to investigate the role of other prenatal steroids, and the interaction between genetics and steroid regulation, according to ScienceDirect.com. Studies on females are also crucial to determine if the findings are applicable to everyone, says The University of Cambridge.

Key takeaways

More research is necessary to fully understand the mechanisms involved and to determine if the findings apply to both males and females.

Research suggests a possible link between high prenatal estrogen levels and autism, particularly in males.

Princeton University is contributing to the field by identifying subtypes of autism, paving the way for a more targeted approach to understanding and treating the condition.

They want to understand autism, not cure it, so they want to profit from it and not have a test to find a cure someday!

Research indicates a shift in the focus of many autism-related organizations and the broader autism community away from seeking a “cure” towards promoting acceptance, understanding, and support for autistic individuals.

This shift is driven by the neurodiversity movement, which views autism as a natural variation in human neurological development rather than a disease to be eradicated. Many autistic self-advocates, in particular, emphasize the importance of embracing autistic identity and reject the idea of needing to be “cured”.

The primary goals of this approach include:

Promoting acceptance and inclusion: This involves challenging stigmas and stereotypes surrounding autism and advocating for societal changes that create more inclusive environments in education, employment, and social settings.
Supporting autistic individuals to thrive: Focusing on interventions and resources that enhance the well-being and quality of life for autistic people, including communication tools, skill development, and addressing co-occurring conditions, according to the Interagency Autism Coordinating Committee (.gov).
Empowering autistic voices: Ensuring that autistic individuals are at the center of discussions and decisions about autism research, services, and support, according to the Autistic Self Advocacy Network.
Advocating for accommodations: Working towards a society that accommodates autistic individuals’ needs rather than pressuring them to conform to neurotypical norms.

While some organizations still focus on research into the causes and treatments of autism, there’s a growing emphasis on research that directly improves the daily lives of autistic people, addresses co-occurring conditions, and develops effective interventions and support systems. This includes research into communication strategies, educational approaches, employment opportunities, and addressing mental and physical health challenges that disproportionately affect the autistic community.

The neurodiversity movement and advocates for autism acceptance are striving for a world where autistic people are valued and supported for who they are, with dignity and respect, rather than being seen as needing to be “fixed”.

How much do they profit from autism treatment in 2025 and into the future?

Estimates suggest the global market for autism spectrum disorder (ASD) treatment was valued at approximately $7.96 billion in 2024 and is projected to reach around $8.55 billion in 2025. This market is expected to experience significant growth, with projections placing its value at approximately $15.36 billion by 2032, exhibiting a compound annual growth rate (CAGR) of 8.7% from 2025 to 2032. The US market, specifically, was valued at $1.04 billion in 2022 and is projected to grow with an 8.7% CAGR during the forecast period.

Several factors contribute to the profitability and growth potential of the autism treatment market:

Rising Prevalence: Increased diagnoses and awareness of ASD are driving higher demand for various therapies and services.
Growing Awareness and Support: Increased public awareness and advocacy efforts, coupled with government support and reimbursement policies (such as the Autism CARES Act and Medicaid funding), are making treatments more accessible and driving market growth.
Technological Advancements: Innovation and technology, including digital health platforms and wearable devices, are expanding access to care and improving treatment precision.
Investment from Private Equity: The autism therapy market has seen a surge in private equity investment, particularly in the Applied Behavior Analysis (ABA) therapy sector. However, some sources raise concerns that a focus on profits in these firms might potentially compromise the quality of care.

Applied Behavior Analysis (ABA) is currently the dominant form of autism treatment, accounting for the largest market share within communication and behavioral therapies. In 2019, the top nine ABA therapy providers were for-profit entities, reporting a combined revenue of $547 million. The overall ABA therapy market is projected to reach $2.45 billion by 2025.

While there’s significant revenue generation in the autism treatment market, especially in the ABA sector, it’s also important to note the following:

The market is fragmented, with many smaller providers facing challenges in expanding their operations.
The market value for autism treatment programs is projected to reach nearly $4 billion by 2032.
The therapeutics market, encompassing drug therapies, is also experiencing growth, with an estimated value of $2.11 billion in 2025 and a projected value of $3.81 billion by 2034.
The lack of approved drugs to treat the core symptoms of ASD means that behavioral therapies, like ABA, currently dominate the market. However, research and development in drug therapies are ongoing, with promising advancements in targeted treatments.

Overall, the autism treatment market is a dynamic and growing sector, driven by a combination of increasing demand for services and significant investment activity. While the financial returns can be substantial, concerns remain about balancing profitability with the quality of patient care.

What study do we need to come up with to test to cure autism in people? How much would the test cost people or insurance companies?

Research is actively exploring the underlying causes of autism, which could eventually lead to interventions that address the disorder’s core features. However, it’s crucial to understand that many autistic individuals and advocacy groups don’t view autism as something that needs to be “cured”. Instead, they focus on improving the quality of life, promoting acceptance, and developing supportive environments for individuals on the spectrum.

Nonetheless, research exploring potential “cures” or treatments is ongoing, with significant focus on the following areas:

1. Genetic studies

Researchers are diligently investigating the genetic factors contributing to autism, with the aim of identifying specific genes and genetic variations that heighten the risk of developing the condition.
Understanding these genetic underpinnings could pave the way for targeted treatments or preventative measures in the future.
Studies like SPARK and the Autism Research Centre utilize advanced genetic analysis techniques, such as genome-wide association studies and whole exome sequencing, to identify rare and common genetic variants associated with autism.

2. Neurological studies

Scientists are employing various brain imaging techniques, including MRI and fMRI, to study differences in brain structure and function in individuals with autism.
By identifying unique patterns of brain activity linked to autism, researchers hope to develop more effective therapies.
Furthermore, UC San Francisco researchers are exploring how proteins interact and how gene mutations affect these interactions, which could potentially lead to interventions that correct problems at a molecular level.
The Autism Biomarkers Consortium for Clinical Trials (ABC-CT) is a large initiative dedicated to identifying and validating biomarkers relevant for autism, aiming to provide measurable biological features that can inform treatment decisions, says Dr. Shafali Spurling Jeste, Chief of Neurology at Children’s Hospital Los Angeles.

3. Behavioral science

Researchers are meticulously analyzing behavioral patterns to gain a deeper understanding of how individuals with autism respond to various therapies.
Observational studies and intervention programs provide invaluable insights that could shape future treatment approaches.
The Autism Research Centre also uses diverse research methods, including computerised testing, gaze-tracking, and cognitive experiments, to gain a more comprehensive understanding of the disorder.

4. Subtype identification

Recent research from Princeton University and the Simons Foundation identified four distinct autism subtypes based on clinical and biological characteristics.
This discovery could lead to more personalized treatments and interventions tailored to the specific needs of individuals within each subtype.

Regarding the cost of testing for autism:

Diagnostic evaluations to determine if an individual meets ASD criteria can range from $250 to $2,500.
Developmental evaluations, assessing overall developmental skills, typically cost between $250 and $1,500.
Comprehensive evaluations, providing a broader assessment of strengths and challenges across multiple domains, can range from $2,500 to $5,000.
Formal autism screenings, using intensive diagnostic tools, may range from $1,000 to $5,000.
Genetic testing for autism is also available, and participation in research studies like SPARK may offer this testing at no cost.

Important considerations regarding costs:

These are general cost ranges, and actual expenses may vary depending on the location, the specific services included in the evaluation, and the expertise of the professionals involved.
Insurance coverage can significantly reduce the out-of-pocket costs for families, and it’s essential to verify coverage before undergoing an evaluation, notes Blue ABA.
University research programs, public school evaluations, community health centers, state early intervention programs, and nonprofit organizations may offer free or reduced-cost testing options.

When can we expect test for autism be available for clients?

Autism Spectrum Disorder (ASD) can be screened for and diagnosed at various ages, depending on a child’s developmental trajectory and the concerns of parents and healthcare providers. While new technologies are advancing the field, the core diagnostic process relies on standardized tools and professional evaluation.

Here’s a breakdown of the typical timeline and availability for autism testing:

1. Early screening (starting at 9 months)

Routine developmental screenings: The American Academy of Pediatrics (AAP) recommends developmental and behavioral screening for all children during regular well-child visits at 9, 18, and 30 months.
Autism-specific screenings: The AAP also specifically recommends screening for ASD at 18 and 24-month well-child visits, even if a child isn’t showing obvious signs. The Centers for Disease Control and Prevention (CDC) supports these recommendations.

2. Formal evaluation (reliable diagnosis by 2 years)

If screening indicates potential ASD: A child will be referred for a formal evaluation with a specialist like a developmental pediatrician, child neurologist, or child psychologist/psychiatrist.
Comprehensive assessment: This involves a combination of methods, including detailed questionnaires, interviews with parents/caregivers, behavioral observations, and standardized tests such as the Autism Diagnostic Observation Schedule, Second Edition (ADOS-2) and the Autism Diagnostic Interview-Revised (ADI-R).
Reliable diagnosis possible as early as 18 months: By age 2, a diagnosis by an experienced professional can be considered very reliable.

3. New technologies and improved access

Advancements in screening: Researchers are developing innovative techniques using artificial intelligence (AI), machine learning, eye-tracking technology, and other methods to enhance the accuracy and convenience of early screening.
FDA-cleared tools: The FDA has cleared the EarliPoint Evaluation, a tool to diagnose autism in children as young as 16 months using objective data, potentially reducing diagnosis wait times significantly.
Increased use in clinics: These tools are being implemented in specialty centers and clinics across the country. For example, the University of Nebraska Medical Center (UNMC) began using such a device for clinical use in April 2024. The Marcus Autism Center also began using a new diagnostic tool in early August (previous year).
Telehealth services: Online platforms and video conference calls are also making evaluations more accessible and potentially reducing wait times, notes Caravel Autism Health.

4. Wait times for evaluation

Can be lengthy: Nationally, wait times for diagnostic evaluations can be as long as 12-18 months, according to Caravel Autism Health.
Varies by location and provider: Wait times depend on factors such as geographic location, availability of specialists, and insurance requirements.
Some clinics offer expedited evaluations: In some cases, appointments can be accommodated within a few weeks, according to Hopebridge Autism Therapy Centers.

In essence, tests for autism, from initial screenings to formal diagnostic evaluations, are already available. The timeline for accessing these tests can vary, but advancements in technology and services are aiming to improve the efficiency and accessibility of diagnosis for all.

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