According to TASS, this is stated in the message of the Cosmonaut Training Center.
Yu.A. Gagarin (CPC).
The decision was made based on the recommendation of the Chief Medical Commission.
Andrey Borisenko left the cosmonaut corps
2021-02-26T09:05:38.983Z
Cosmonaut Andrei Borisenko, at the age of 56, completes work in the cosmonaut corps for health reasons.
Source: russiart