![Artistic rendering of different types of athletes.](https://www.usada.org/wp-content/uploads/comp-levels-athletes.jpg)
Four Things to Know about Competition Levels of Athletes
Your competitive level, which is subject to change, may help you determine whether you need to file a TUE or if you should fill out a TUE Pre-Check form.
![Jen Armbruster playing goalball.](https://www.usada.org/wp-content/uploads/jen-armbruster-post-e1685561678662.jpg)
Meet Jen Armbruster: Paralympic Medalist and Anti-Doping Education Athlete Presenter
Paralympian Jen Armbruster joins USADA to help educate the current generation of athletes about why it matters to compete the right way.
![A smoky cloud that looks like a skull coming out of a supplement bottle of pills.like a Skull](https://www.usada.org/wp-content/uploads/regulatory-warnings-e1685642474656.jpg)
Supplement High Risk List: What are Regulatory Warnings?
Learn more about regulatory warnings on the dietary supplements featured on the Supplement Connect High Risk List.
![Anastrozol.](https://www.usada.org/wp-content/uploads/shutterstock_1970133766.jpg)
What Athletes Need to Know about Aromatase Inhibitors
What athletes and athlete support personnel need to know about aromatase inhibitors and their stats on the World Anti-Doping Agency Prohibited List.
![2023 WADA Prohibited List.](https://www.usada.org/wp-content/uploads/prohibited-list-2023-changes.jpg)
Athlete Advisory: Explanation of Key Changes on 2023 WADA Prohibited List
An explanation of key changes to the 2023 WADA Prohibited List, which identifies substances and methods that are prohibited in sport.
![Gloved hand holding a bag of synthetic cannabinoids.](https://www.usada.org/wp-content/uploads/synthetic-cannabinoids.jpg)
Four Things Athletes Should Know about Synthetic Cannabinoids
While cannabinoids have become more popular, it’s important for athletes to know that these substances are still prohibited in competition.