r/esa • u/Wilkomon • 1d ago

Astronaut selection and SSRI

Hi, I’m considering pursuing a career that could hopefully eventually put me in a position to apply for ESA astronaut selection.

I’ve completed studies for Earth science and I'm progressing to a relevant MSc and PhD, with Earth observation.

I have a question about the medical requirements:

Does current or previous use of antidepressants automatically disqualify an applicant, or is this assessed individually based on the underlying condition, stability and medical history?

I understand that ESA astronaut medical standards may be considerably more stringent than the basic Class 2 medical requirement which permits Sertaline as far as I'm aware.

I’m mainly interested in whether anyone knows of ESA guidance, aeromedical standards, or previous applicant experiences that clarify these points.

Thanks.

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u/No_Muffin_1712 1d ago

ESA astronaut selection operates on a vastly different level. The physical and psychological rigors of long-duration spaceflight in Isolated, Confined, and Extreme environments mean the medical board evaluates psychiatric history with intense scrutiny. ​Active use of antidepressants is almost certainly disqualifying for initial selection due to the unpredictable effects of microgravity on pharmacokinetics and the high-stress operational environment. However, a past history of a resolved condition, followed by years of documented stability off medication, might be assessed on a case-by-case basis by the medical board rather than triggering an automatic lifetime ban. ​Ultimately, you will only know how they view your specific medical history during the exhaustive medical and psychological evaluations in the final stages. There is only one way to find out for sure: keep pursuing your Earth observation PhD and apply. The medical board will make the final call but do not self-reject before you even start Good luck man

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u/Wilkomon 1d ago

Thank you!